The circuit in the base of the bulb is a classic switching supply which is why the item will work across a broad range of input voltages. A lot of manufacturers will scrub the chip id so that their circuit can't be easily reverse engineered. I've designed enough power supplies to recognize a switcher when I see it. The power factor is high due to the inherent efficiency of a switching supply. A dimmer won't work with these bulbs because the switching supply will maintain a constant DC bias across the LEDs hence the broad range of input voltages. I wouldn't be surprised if the chip wasn't an LM2576 equivalent. Most of those regulators incorporate a soft start feature which would account for the slight delay in turn on. The LM2576 allows up to a 60v input voltage so using a simple voltage divider would be more than enough to allow operation off the mains without a step down transformer. I'm not saying it is an LM2576 since the package isn't the same but you get my drift. I am as amazed as you are at the complexity of the design given the cost of the item. The only way I can account for the cost is that a) it comes from China and b) it is overstock inventory from a chain store. Btw, thanks for saving me the trouble of taking one apart. It's been bugging me about their internal construction since they came out and it would have been just a matter of time before I took one to pieces myself.
John Brandolini. OORAH! Another intelligent electronics geek! I are one, too! I had no idea how many of us were out there. I know there are probably lots of us in the industrial areas and Silicon Gulch, but I've been at it for over 50 years. And ditto on the takedown. I have a few failed ones I have not yet autopsied and when I had time I was going to rip one open to see what I could find. And your assessment is dead on, I agree. As far as the dimmable ones, I have a feeling that they have something like a little 8-pin SOIC PIC micro doing its thing with PWM. They could also have something like a small ASIC which would work far faster than an inline micro with dedicated logic. So it could probably monitor the shape of the waveform looking for the classic shape of a TRIAC/DIAC waveform from a dimmer, and power down the LED's accordingly. And in China, they would be really dirt cheap chips since they would be manufacturing them in the gazillions for every other place making these bulbs. And the soft start is exactly what I thought. I have worked with much stuff using soft start for 15 KV power supplies for gas discharge lasers. Soft start is the best way to keep the LED's from getting fried with voltage spikes. BTW, I am (was) a senior electronics engineering technician. I just wish I was back on the bench again. But I am retired and where I now live, there are farmers, cows, trees, forests, hayseeds and heroin addicts (even in the mountains of north central Pennsylvania!) There is precious little high-tech development around here. We don't even have 24/7 bus service like I was used to in Philadelphia. You can contact me on Fascistbook, if you like, just use my name as you see it, or you can contact me at elektron10@verizon.net. It's nice to know I am not alone. LOL
Great video for being so old (LOL 3 years ago). About 5 or 6 years ago, I decided to change all of my home's light bulbs to energy saving, the coil style neon. Then the LED's came out but they were so expensive. . Then We get a Dollar Tree here in Branson, Missouri and I discovered these LED lights for 1 dollar. The one's here are actually made by Sunbeam and are 800 Lumens at 60 Wattts. The Dollar tree here is going under an expansion, so today I drove to Harrison, Arkansas to do some shopping abd stopped at their Dollar Tree and bought 6 more. It crazy that when I started this "adventure", I didn't realize it, but my house is home to 72 light bulbs, so Dollar Tree has made it much more affordable for me to transform over, plus like I said, These are Sunbeam brand and are 60W which is plenty. The ones I have states they are suitable for enclosed fixtures.
"no sales tax" was the most exciting part of this video to me!! I wish you had turned the bulb on again after taking off the globe, to see how it lights up. It makes a half-decent ping pong ball too!
Oh, well don't worry: We pay a whopping 9++% State Income Tax, which i don't wish on anyone. I would much rather be nickled & dimed all day on purchases than pay 9+% of my income.
I purchased this identical bulb (several of them) at Home depot for $7.99 each. I live here in Ontario - Canada. I ended up with a bill of over $90.00. Of course this included tax @ 14%.
On some LED bulbs you can see 2 resistors connected in parallel, at least here in 230V land. On some it's hidden on the power supply which is vertical and that makes it much harder to reach, but generally if you were to remove one of the resistors it will make the LED run dimmer and cooler (since connecting 2 resistors in parallel lowers the overall resistance) which makes them last a lot longer and depending on what kind of lighting you need it might be more suitable and not too bright. I have modified a couple and while the resistor values may change slightly, with typical 6W bulbs they end up running at around 3 watts. The thing is that the bulbs are designed to fail, and therefore they push the LEDs to the limit so they run extremely hot and provide as much light as possible. If they made them run at a modest level then likely some people would be put off because of the dimness and they wouldn't need new bulbs because they would last forever so it would be a lose-lose situation for the manufacturer. Even if you buy the 2/3 watt bulbs they are built pretty much the same but they just have fever LEDs so they are still being basically burnt, not sure how those are constructed though but I'm loving the modified bulbs I have
Darrell Pidgeon definitely, there's a ton of great deals there actually if you're into salvaging/repurposing stuff. The one near me has a pretty decent electronics section for a dollar store too. It's mostly small items that people would buy for their phones of course (like 3.5mm splitters, earbuds, 3ft usb extension cables, etc.) also I've been getting a few more solar garden lights each time i go lol, no hard plan for that yet other than to wire the panels in series and mount them on something once i get enough to generate something worth bothering with but it's hard to pass up a little solar cell and a 1.5v rechargeable Li Ion with battery holder for a dollar. there's so much potential in that store; between the electronics and other random things that i always seem to find there that i think i could use for a project I can't get out of dollar tree nowadays without spending like 40 bucks haha.
They work great. I bought 40 of them at my local dollar tree two weeks ago. Replaced all the CFLs I had left. They work as well as the 8 dollar bulbs I have bought.
I bought a couple of these dollar-store Globe/Liminus bulbs recently and find them quite impressive. Most of the brand-name LED bulbs I've tried make an annoying buzzing noise, but these ones are silent. They both turn on instantly, including the Globe brand one, so I guess they've improved that since you made this video. I'll be buying these bulbs from now on.
I grabbed some (not sure of the brand, but same style bulb) in Canada here, they were selling them with some coupon in the store for $1CDN with the coupon and the store had a stack of coupons you could help yourself to. I've been very pleased with these, I think all of mine were 60W. I heard from one lady that these are really good for people that are sensitive to lights that flicker like florescent bulbs. Some get migraines etc, while these I guess are a great relief, which makes sense as LED lights do not flicker. The low power usage is also not a surprise as diodes do not use much power normally, so it makes sense. All of the street lights in my city also use huge LED lights now as well. The conventional bulbs which I used to still use got annoying as they were blowing on me every six months it felt like. While the LEDs have not went on me yet and it's already been well over a year since I replaced them all, so already they have paid for themselves in replacement costs as well as a lower power bill.
I found these Globe LEDs @ Dollar Tree stores in Portland Oregon a few years back. I put them in all around the house and not even a single one has failed. I never noticed if some say they are multi voltage. I could use them over seas! I recommended to friends who regularly travel to Mexico, which also uses 120volt AC, that they bring along a few of these for the Air B&Bs they stay in as they don't have Dollar Tree or low priced, quality LEDs like these in Mexico.
The tiny delay is a really good sign, it indicates a switch mode controller bootstrap... so that's going to be far more than a capacitive dropper.... the fact that it covers US and european voltages also indicates a switch mode.
James Lewis, Another electronics geek! I are one, too! I completely agree with your assessment. The dimmable ones probably have a Chinese designed ASIC, something similar to an 8-pin PIC, but with the concurrent logic that can be built into ASIC'S. It would have to look at the dimmer waveform to do a relatively simple DSP and be able to respond concurrently. It would most likely use PWM to adjust the level to the LED's to lower their output.
After seeing how tough these LED Bulbs are in you video, found six (60watt equivalent, 120volt only) LED Bulbs at my Dollar Store. Really bright warm white lamps!!! Thanks
This was interesting, thanks! I thought you were gonna measure the light output or power draw or something. I didn't expect you to defrankenstein it :-)
I agree that these are very nice bulbs. I picked up several of the "60W equivalent" versions at my local Dollar Tree, and dropped one in checkout line. The 60W equivalent version has glass bulbs, and it shattered. The gal wanted to swap it for an intact one, but I went ahead and bought the broken one. It works fine, and is actually a bit brighter than the intact ones. :-) Dollar Tree now has 100W versions, also for $1. Even more amazingly, about a month ago I even saw two-packs of 60W bulbs for $1.
After watching this, I disassembled a Sylvania LED light bulb that had gone extremely dim. What I've found so far is that the negative lead had a cold solder joint at the board (popped loose with no effort) AND the power supply is putting out 83.9 VDC. I'm going to test out the chips with a small 12 volt power supply and see if I can use them in a project. I'm thinking the power supply is NG. Not sure which component is causing the high voltage output.
I was tired of replacing standard bulbs in my daughter's flush mount ceiling light (3 bulbs) so I bought some LEDs. They were not THAT cheap, but the box said they run very cool. No lies. Three bulbs enclosed and running beside each other creating almost no heat to the touch and much better light. Two years, so far so good. I also have 130 volt standard bulbs in some lamps that have been running for over ten years now because they don't succumb to power fluctuation.
Walmart sells their brand of these LED light bulbs, 60 watt equivalent (9 actual watts used) daylight bulbs (non dimmable) 800 lumens, last 18 years based on 3 hours per day usage. 5000 K light appearance for $0.97.. I've bought a few and they work really well. I like your video because I have a GE LED light bulb that didn't last 6 months and I was wondering how to get it apart. I am going to try and take it apart since watching your video gives me an idea of how to get it apart. Thank you for this.
Thanks for the tear down. I had one of these go bad and after frustrating myself trying to see inside, decided to do a search. Tough little suckers to open up.
Just bought 60-Watt LED light bulbs at Wal-Mart for $3.97/box of 4. Non dimmable. With a hacksaw I cut off some globes and use them as excellent point light on the workbench.
Why 36 Volts? Pure (filtered) DC so no flicker? I'd like to connect most house outlets on battery DC so not even slight flicker and power when power outage. Some outlets would need to remain 120VAC.
Re: 36 vdc, happens to be what that bulb power supply delivers, others may differ depending on the led chips used. My home made light fixtures have no space for anything other than the led panel so power has to be from a remote source.( Re engineered lamps.)
Yes, I like the remote power source. I want table lamps with no cords. An electromagnet below would power the lamp through a coil in the base. Batteries in the lamps would be a plus!
Hello Well done nice work. I did the same work when I moved to my new house that was 6 year ago (2012)that time led bulbs were not cheap each bulb cast me £10 ($13) and each bulbs were producing 806 lumens if I want more lumens it was more money but I was happy with them. Since then I replaced one led bulb because it stop working I'm not complaining just telling 😁. To me switching on to led bulbs were best decision 💪💪 . now days led bulbs went down by $$$ 70%. Thanks for your video l love it and good luck.
My local Florida dollar tree just started carrying 60w LEDs. Until now that store has never carried LEDs. I was shocked! So I bought 30 of them and replaced the florescents in my house. Theres a lot less yellow in the house now, it's a lot brighter, and coupled with my white bathroom walls I should have some well lit shaves in the mornings from now on.
The hands down most awesome use for LED bulbs is the garage door opener. since that is an out of the way place to have to change a bulb. Also florescent do not operate in the cold as well... Be sure and dispose of your old florescent bulbs at a hazardous waste station because they contain Mercury.
same with fish! and us, we contain mercury too; and so does all the air that we breath; infinitesimal qty,to the point that one bulb does not matter; same as with one vote in a national election,food for thought,here,lol. www.state.nj.us/dep/dsr/research/mercury-bulbs.pdf
That one is cool - with the internal refractor... The newer bulbs replace the entire power supply with just a bridge, a capacitor, and a single chip current limiter. It's only going to get cheaper and better from here on out. And, like others here, I've removed the globe to use in ceiling fans where a regular sized bulb won't fit. Thanks for the great video!
Thanks Adrian. I have bulbs that look identical in Australia. If I find some more I will take one apart. I use them in my studio for fill in lights when I make my TH-cam videos. My bulbs are 10 W 220-240V. I can't remember what I paid for them.
+Adrian Black: That it's $1 IS pretty amazing. It really wasn't that long ago, when they were VERY expensive. And as we know, the price WILL (CONTINUE to) drop, even further, over time. The delay is so iirelevant, that - for what these bulbs save one in usage cost, it's still a great buy. The only thing which would mean anything to me, is the light's colour quality. I prefer the ones which are as close to full spectrum as possible, but, for a general-purpose LED bulb, this ia great one. Liked watching this - the durability of this bulb's AMAZING. I'd really like to get a tube of the glue the manufacturer uses to seal the globe on - WOW! Always find these 'inner-working' videos interesting. Thank you, Mr. Black.
I purchased Feit LED bulbs 60 watt equiv, 9.5 watt, soft white dimmables, in February 2016 and put one into service in January 2020. I used it to provide some background light for reasons and ran it typically a very long time every day (way more than 3 hours a day) and it "broke", i.e. dimmed out, in August 2020, so about 7-8 months. I bring this up to be able to relate that the bulb base, which looks just like in the video, so probably a standard look, was excruciatingly HOT. No touching it. I figure that the heat finally go to the components and/or the LEDs. The replacement bulb, from the same pack, showed the same characteristic - it lit up fine but also got HOT - so it appears that 9.5 watt heat dissipation for long continuous use could be better, but the set was pretty cheap and there was no way to improve heat dissipation anyway.
I couldn't believe it when I found this at dollar tree last year (I'm also in Portland). I bought two just to try out and they are still working great. Went back the next day and they were all sold out. Finally came back in last week, the 60w. Dollar tree also had a package with 2 CCFL's so I bought a bunch of both.
Adrian Black+ Have you thought of turning the light on for a while to heat it up and make the glue and or dome pliable enough to break loose and remove?
Good idea! But I would use a heat gun or a hair dryer for that purpose. Somehow, I believe that the adhesive would be formulated to be able to withstand any heat except the abnormal heat of a catastrophic failure of the circuitry by overheating.
They are high-quality bulbs, only dated. Dollar Tree picked them up for pennies on the dollar. This is their business model. This is also the beauty of Capitalism. Any true 'Dollar Store' could not survive if the public realized they only sold crap. Many high-quality items are to found... sometimes fleetingly. I see a lot of Philips and Magnavox branded products. Today's 'fads' sometimes wind up there a year later. Keeps folks coming in. If it seems too good to be true... stock up on it.
I found 100 watt equivalent LED bulbs at the 99 cent store about a year ago. They had both round and Spotlight. I have had the spot light bulb in the back yard on 24 hours a day for almost a year and it's still going strong. Luckily I bought about 10-12 of each.
i was just in dollar tree yesterday and saw the $1 led lights. i bought one to try it out and make sure they only charged me $1 at register. i screwed in the bulb shocked to find out it actually worked now i plan on buying some more ASAP. i live in NJ. I checked other dollar stores they had some leds for $3 each. so getting cheap everywhere
$1 stores always charge $1, $3 is not right in a dollar store. You must mean Dollar Family. Their prices are higher for certain things. I don't go there any more !
I am not so picky. I think that the merchandise at Dollar General is well worth their prices. Where I live there are Family Dollar stores and Dollar General. Neither charges $1 for everything in the store. In the true $1 stores, much of the merchandise is REALLY cheap crap. And I live on nothing but my Social Security, so I know what is cheap and good vs. cheap and bad. I would NEVER buy an FM stereo boom box from ANYBODY if it was only $1, especially if brand new. And the kitchen appliances like mixers, coffee makers, and things like that, would you take a chance that the quality would be so poor that they could only charge $1 for it that it might electrocute you or send shredded plastic into your mashed potatoes that could be swallowed by your child that would cause him or her serious injury? That is what you would get if those items were that cheap. As the old adage goes, "You get what you pay for." There is another: "Buyer beware." There is a reason why a publication like Consumer Reports exists. Some of these things are so bad that they won't even bother to review them. They figure that Americans are smart enough to avoid the worst trash out there on the market.
They figure they are safe giving a warranty on them since no one will make a claim on the warranty. By the time the light dies in a couple of years, the people will not have their receipt, they won't remember where they bought them, or they will realize that it costs more to ship the defective bulb back than it would cost to just buy a new one. I just replaced a LED bulb in my garage after only 2 years. I had bought it at Fry's, but there's no way that I have a receipt from that long ago. I decided to disassemble it and had as much fun as you apparently did. I was beating on it with a pair of side-cutter and it would *slightly* crumple, but not break. Eventually, I got a hole in it and used the side cutters to slowly snip away the translucent globe. After disassembly the rest of it, I see where apparently a resistor had burnt up, so for a few cents, it might have been possible to repair it, but there is no way to "disassemble" the bulb -- you can *tear it apart*, but that is about it. I also tried using a heat gun in the hope that the adhesive would soften enough for me to remove the globe. I managed to deform the globe, but it still was very well attached. After "disassembly", I salvaged it for parts that I might could use in other projects in the future. I haven't figured out what voltage the COB LEDs are using yet. I've tried from 9V up to 24V, but have not even gotten a dim glow from the LEDs. I have a couple more of these LED bulbs that have died and I will be "disassembling" them also, but I need a more elegant solution than just "beating it to death with a blunt object"... :) I'm thinking that I'll just chuck it up in my lathe and cut a groove at the base of the globe to remove it.
That is a VERY good, if not GREAT, find! I have opened a few LED bulbs, and that one is so far THE ONLY ONE that uses film capacitors at input, which means they will not dry up over time and lose capacitance like the electrolytic ones. The power supply unit is a pretty good quality, the casing is solid and uses aluminum heat-sink, apparently sufficient number of LEDs, IF they're rated at 1W each, but chances are it's less and they're over-driven. It would be nice if they were 4000K (neutral white). P.S.: It's not hard to open them with a kitchen knife, just cut the silicon glue by spinning the bulb with your hand while laying it on a carpeted floor. Relatively safe and easy.
I scrolled down to the comments as the video played out... heard the funny sound that the globe made while bouncing - had to scroll back up to figure out what was going on. Funny.
Thanks, I think it is important to add to be careful with the "bulb" I thought they were all plastic but found once a Crystal one... I was lucky it didn't burst when squeezing (no gloves at the time)
I love Dollar Tree. I got all my cologne there. It may not last as long as the $80 authentic, but after losing about a grand worth of cologne, I'll go ahead and spray every hour instead of every 5. Light bulbs specifically though, Fry's Electronics has em for like $0.50 now often
postage is going to cost more to return. Just bought couple for the garage area Walmart ones. Impressed with LED! Hated floresent offerings. What do you recommend for recessed lights in 65 w
Sometimes the big dollar store companies buy up huge amounts of surplus products in bulk at reduced cost. They pass this on to their clients. The bulb he has is a good quality one with a switching supply inside of it. The metal structure should be the heat sink. The LEDs are mounted on a head conductive assembly to conduct the heat to the heat sink.
I barely find anything that fancy at my Dollar Tree. Best I saw a while back was Halogen bulbs under the "Sunbeam" label, and sadly after buying one, it went out after a few days. I remember a couple years back when they had CFL's at one Dollar Tree I went to and I didn't mind getting those anyway. Mostly Dollar Tree carries those "rough surface" bulbs that skirt on by despite being sturdier incandescents (though a few burned out on me anyway pretty quickly.). My local Kmart had a four pack of LED bulbs (40w equivalents) for 90 cents today! They had plenty of boxes left, but no price to see so I had to check one of their price readers to find out (it was also a clearance sale of 70% off on all their bulbs in stock).
LeanVlogs ★ yes, the expensive ones they fill them with goop to avoid you tampering with them. Main issue with this one could be little surface for dissipation, add to that they put very little heat transfer paste....
I bought one of these out of curiously for a bed light. It works very well, the globe stays cool but the metal base with the electronics inside gets very hot. And my local dollar tree always seems to sell a lot of them.
In Michigan, we similarly have $1 LED bulbs at Dollar Tree. My understanding is that these bulbs are subsidized by the local utility companies as part of various green initiatives, which (for Michiganders, at least) accounts for the amazing price/quality disparity. That bulb definitely cost more than a dollar -- the customer just didn't have to pay full fare.
I found these at Dollar Tree about 2 years ago I guess. Anyway I switched over ever light in the hose to them. I even have spares but I may not need them. I have not had any problems at all. And you can not go wrong for $1. By the way the ones I got were 60 watt equivalent and 100 watt equivalent.
I BOUGHT A BUNCH OF THESE FOR MY HOUSE CONVERTING ALL MY BULBS TO LED BEFORE SEEING THIS VIDEO THEY ARE NICE LIGHTS AND USE A LOT LESS ELECTRICITY AND IS MUCH CHEAPER THEN ANY OTHER STORE AND SEEMINGLY BETTER MADE THEY ARE A GOOD BUY
Wow I only just noticed them in Dollar Tree about a year ago, but definately nice bulbs so far for me. Better than some GE bulbs I got from Home Depot. I've had a couple of the 4 or 5 of them I bought go bad, I'm guessing from the power supply.
omg it bounces. lol. I may just go pick a bunch up. I have all CFLs now, don't know if swapping them out before they die is a cost benefit to me. we're talking 9watts vs 6.5-5 watts each. Am I really gonna fire excel up to do a cost benefit analysis... maybe lol.
LEDs have several advantages over CFLs. The most important to me is getting away from mercury. When a CFL breaks, either you're going to have to go to great lengths to clean-up the mess, or be breathing mercury for a long time.
I just bought a Wein ionizer and I broke the antenna out of place. I opened it up and the antenna is not connected to anything. Please help me. You are so smart. Everyone wants me to throw it away. I want the vortex effect to work again. WeIN V-I 2500-N workThank you Lydia
I replaced every single light socket in my house from Great Value CFL to the 8.5w Great Value LED for $0.17 each. I didn't buy enough but, by then Walmart was only offering Great Value 5w LED bulbs for $0.17 so I ended install 10 5w Great Value LED bulbs in my mother's bathroom. Those 5w LED bulbs look at bright as the 8.5w LED bulbs.
FYI, N=Neutral L=Line (This is "electrical speak"). Further- I am fairly certain that any device with hv circuitry (especially for residential use) must have a fuse to meet UL rating and approval. It's a liability thing (ca-ching).
So been watching Bigclive for a few years and this came up in the related. Have you looked at the walmart LED bulbs? They are like $2.00 for 4 now. Been using them in my house and they seem to work very well.Also, Ive lived in Salem for 40 years. Nice to see fellow Oregonian.
Our dollar tree had the same bulbs in 60 watt two in a package for a dollar, right next to the single bulbs for a dollar each. I was smarter than the average person and bought all the double packs. I put a pair in my outdoor flood light bases, it is partially covered by my roof, but they do get wet when it rains, so far no problems and they give off better light.
I pay around $10 for 40W can be used with dimmer. No heat, light is instant and my electric bill has dropped since I install all LED, I had much rather have LED than CFL's. CFL's come on dim and takes about a minute to reach the maximum light.
do you know if these would be able to be turned on using a 12v power source from a molux connector in a PC? they look bright enough, and fora dollar... dang! thats cheap
I'm just wondering if LED bulds put our so much heat why can’t they be used in the easybake ovens? I thought they gave off no heat. I thought that was the reason they couldn’t be used in those ovens.
So imagine somebody wanted to use a DC battery to power the bulb, what voltage should be fed to the board? And would it be acceptable to feed power directly to the LED board? (I'm thinking of making a glow-in-the-dark lure charger; flashlights work, but I can only imagine how good of a charge I would get if I were to take 2 LED boards from 800 lumen bulbs, mount them in an enclosure, and hook it up to a regular 12 volt battery with some kind of regulator on it.)
RealRuler2112 you would at least need a regulator for constant 12v dc output (eBay) as the battery will vary voltage and good dissipation (long story short constant voltage will increase the temperature). A better option is constant current but more cost and science goes into it.
Dollar Tree tends to get overstock high-quality items to sell them cheap, usually from companies that have gone out of business, or bought WAY too much and just want to get rid of inventory, or something along those lines. Some manufacturing companies will also over-produce in some cases because they expect a certain failure rate, but the actual failure rate ends up being lower, resulting in far too many good units. They sell that overstock so they don't have to entirely eat the cost as well. In other cases, it's items that are outside the stated specifications [maybe color temperature or brightness is supposed to be within 5% of a given value, and some end up in the 6-10% range but still work] and are sold for cheap -- again, so they don't eat the entire cost. In any case, it's good for value hunters!
I did the same, an oopsy from up the step ladder, with an ordinary bulb you would be running for a dustpan and broom, with this one I wanted a baseball mitt to catch it with all that crazy bouncing, and it still worked when I screwed it in! Oh, and this was a NOMA brand, bought from Canadian Tire. They had a stack at the door of these going for .99cents.. But I went to the back of the store, and found another stack of boxes of the same- 3 to a box for the same price, $.99!!!!! that makes it come out to $.33 each! I don't care about the taxes, this was an unheard of deal... Oh, and this is for a 60 watt equivalent, not 40 watt. When I dropped one, i thought I was pooched, I swear it dropped 8 feet, bounced back up about 4 feet up, and bounced all over the place for about another 20 times before finally stopping, I couldn't believe it when it lit up when I screwed it in, like nothing had happened! It's still there in my hallway, lit up like nothing happened to it, a testament to the choice of materials and construction of these new LED bulbs!
I have tried several brands of LED bulbs, mostly 60w equivalent. The only one with any problem was Globe branded. Two of them failed after a few months. They start shutting off, then on, then off. I opened one, and was impressed by the construction, but not working loses me.
My big question is, What is the transformer doing. From his description the fullwave bridge is right at the power source. that puts the transformer receiving D.C.. LEDs do not need a ballast. 110 V to 1.5V is a huge power drop. I have been replacing my 1 and 2 tube Florescents with 12 foot LED ribbons. I use a 12V power supplies I have from toy chargers. I started doing this when the Florescents start flickering at start up. I got a lot more light and more coverage.
What is the transformer doing? It is the inductor for a switching power supply. You are right that pure DC to a an inductor doesn't make sense, but if you pulse the DC you get a type of switching power supply. Why use a transformer instead of a plain inductor? If you check out the bigclive youtubes, he back engineers the circuit to a schematic at times (which this channel did not do) and says a bit about why they do things the way the do. Full wave rectification, unfiltered, appears as partly DC and partly as AC to an inductor. The LED chips are generally all in series, and, although the chips are multiple light emitting diodes (to get more light), white LED chips drop about 3 V, the same as one white LED.
LEDs basically are instant on (close enough, better than fluorescent for sure), and ambient temp should not matter. But.....I just checked $ tree, a buck! I'm on my way. Oh and their bulbs are 60W. Great video! You're a genius? I was hoping to see what to do with the remains but I'll figure out something. By the way, you kept talking about heat. I thought LEDs make no heat. So I just touched my $15 100W equivalent Phillips that has been on for a few hours. How do you like your eggs. Great video. Thanks
Globe Electric is Canada's fastest growing lighting and electric products manufacturer. Did dollar tree buy these at a bankrupt liquidation somewhere ? Because that product is expected to be sold for more than $1 and only in Canada (bilingual packaging is for Canada)
YOu should try running DC current through the LED. I bet it would work and would save even more current because it would not have to run the converter section.
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277 is a standard voltage for industrial lighting systems. It is one of the phases you can get from 480V 3 phase system.
The circuit in the base of the bulb is a classic switching supply which is why the item will work across a broad range of input voltages. A lot of manufacturers will scrub the chip id so that their circuit can't be easily reverse engineered. I've designed enough power supplies to recognize a switcher when I see it. The power factor is high due to the inherent efficiency of a switching supply. A dimmer won't work with these bulbs because the switching supply will maintain a constant DC bias across the LEDs hence the broad range of input voltages. I wouldn't be surprised if the chip wasn't an LM2576 equivalent. Most of those regulators incorporate a soft start feature which would account for the slight delay in turn on. The LM2576 allows up to a 60v input voltage so using a simple voltage divider would be more than enough to allow operation off the mains without a step down transformer. I'm not saying it is an LM2576 since the package isn't the same but you get my drift. I am as amazed as you are at the complexity of the design given the cost of the item. The only way I can account for the cost is that a) it comes from China and b) it is overstock inventory from a chain store. Btw, thanks for saving me the trouble of taking one apart. It's been bugging me about their internal construction since they came out and it would have been just a matter of time before I took one to pieces myself.
I just Googled the circuit and there is no info on it, I usually find circuits this way. It's too new.
Power factor has nothing to do with efficiency.
Its an offline buck switcher.
John Brandolini. OORAH! Another intelligent electronics geek! I are one, too! I had no idea how many of us were out there. I know there are probably lots of us in the industrial areas and Silicon Gulch, but I've been at it for over 50 years. And ditto on the takedown. I have a few failed ones I have not yet autopsied and when I had time I was going to rip one open to see what I could find. And your assessment is dead on, I agree. As far as the dimmable ones, I have a feeling that they have something like a little 8-pin SOIC PIC micro doing its thing with PWM. They could also have something like a small ASIC which would work far faster than an inline micro with dedicated logic. So it could probably monitor the shape of the waveform looking for the classic shape of a TRIAC/DIAC waveform from a dimmer, and power down the LED's accordingly. And in China, they would be really dirt cheap chips since they would be manufacturing them in the gazillions for every other place making these bulbs. And the soft start is exactly what I thought. I have worked with much stuff using soft start for 15 KV power supplies for gas discharge lasers. Soft start is the best way to keep the LED's from getting fried with voltage spikes. BTW, I am (was) a senior electronics engineering technician. I just wish I was back on the bench again. But I am retired and where I now live, there are farmers, cows, trees, forests, hayseeds and heroin addicts (even in the mountains of north central Pennsylvania!) There is precious little high-tech development around here. We don't even have 24/7 bus service like I was used to in Philadelphia. You can contact me on Fascistbook, if you like, just use my name as you see it, or you can contact me at elektron10@verizon.net. It's nice to know I am not alone. LOL
John: Am I missing something? These type of switching circuits always require an inductor. I don’t see an inductor.
Great video for being so old (LOL 3 years ago). About 5 or 6 years ago, I decided to change all of my home's light bulbs to energy saving, the coil style neon. Then the LED's came out but they were so expensive. . Then We get a Dollar Tree here in Branson, Missouri and I discovered these LED lights for 1 dollar. The one's here are actually made by Sunbeam and are 800 Lumens at 60 Wattts. The Dollar tree here is going under an expansion, so today I drove to Harrison, Arkansas to do some shopping abd stopped at their Dollar Tree and bought 6 more. It crazy that when I started this "adventure", I didn't realize it, but my house is home to 72 light bulbs, so Dollar Tree has made it much more affordable for me to transform over, plus like I said, These are Sunbeam brand and are 60W which is plenty. The ones I have states they are suitable for enclosed fixtures.
"no sales tax" was the most exciting part of this video to me!!
I wish you had turned the bulb on again after taking off the globe, to see how it lights up.
It makes a half-decent ping pong ball too!
They make up for it with property and income tax. They have been trying many times to add sales tax.
Oh, well don't worry: We pay a whopping 9++% State Income Tax, which i don't wish on anyone. I would much rather be nickled & dimed all day on purchases than pay 9+% of my income.
I purchased this identical bulb (several of them) at Home depot for $7.99 each. I live here in Ontario - Canada. I ended up with
a bill of over $90.00. Of course this included tax @ 14%.
On some LED bulbs you can see 2 resistors connected in parallel, at least here in 230V land. On some it's hidden on the power supply which is vertical and that makes it much harder to reach, but generally if you were to remove one of the resistors it will make the LED run dimmer and cooler (since connecting 2 resistors in parallel lowers the overall resistance) which makes them last a lot longer and depending on what kind of lighting you need it might be more suitable and not too bright. I have modified a couple and while the resistor values may change slightly, with typical 6W bulbs they end up running at around 3 watts.
The thing is that the bulbs are designed to fail, and therefore they push the LEDs to the limit so they run extremely hot and provide as much light as possible. If they made them run at a modest level then likely some people would be put off because of the dimness and they wouldn't need new bulbs because they would last forever so it would be a lose-lose situation for the manufacturer. Even if you buy the 2/3 watt bulbs they are built pretty much the same but they just have fever LEDs so they are still being basically burnt, not sure how those are constructed though but I'm loving the modified bulbs I have
That was a fairly clean tear-down. The components inside are worth the dollar.
Darrell Pidgeon definitely, there's a ton of great deals there actually if you're into salvaging/repurposing stuff. The one near me has a pretty decent electronics section for a dollar store too. It's mostly small items that people would buy for their phones of course (like 3.5mm splitters, earbuds, 3ft usb extension cables, etc.)
also I've been getting a few more solar garden lights each time i go lol, no hard plan for that yet other than to wire the panels in series and mount them on something once i get enough to generate something worth bothering with but it's hard to pass up a little solar cell and a 1.5v rechargeable Li Ion with battery holder for a dollar. there's so much potential in that store; between the electronics and other random things that i always seem to find there that i think i could use for a project I can't get out of dollar tree nowadays without spending like 40 bucks haha.
Love how excited and passionate you were about it. Also appreciate the thoroughness, thanks.
They work great. I bought 40 of them at my local dollar tree two weeks ago. Replaced all the CFLs I had left. They work as well as the 8 dollar bulbs I have bought.
That was a very pleasant surprise seeing what was in it for $1.
I bought a couple of these dollar-store Globe/Liminus bulbs recently and find them quite impressive. Most of the brand-name LED bulbs I've tried make an annoying buzzing noise, but these ones are silent. They both turn on instantly, including the Globe brand one, so I guess they've improved that since you made this video. I'll be buying these bulbs from now on.
I grabbed some (not sure of the brand, but same style bulb) in Canada here, they were selling them with some coupon in the store for $1CDN with the coupon and the store had a stack of coupons you could help yourself to. I've been very pleased with these, I think all of mine were 60W. I heard from one lady that these are really good for people that are sensitive to lights that flicker like florescent bulbs. Some get migraines etc, while these I guess are a great relief, which makes sense as LED lights do not flicker. The low power usage is also not a surprise as diodes do not use much power normally, so it makes sense. All of the street lights in my city also use huge LED lights now as well.
The conventional bulbs which I used to still use got annoying as they were blowing on me every six months it felt like. While the LEDs have not went on me yet and it's already been well over a year since I replaced them all, so already they have paid for themselves in replacement costs as well as a lower power bill.
The two screws holding the light guide would sell for a dollar at the Aubuchon Hardware Store here in Montpelier, VT!
lol, i bought stuff from a local store and they sell like that too, two little metal pieces for 1 dollar
I found these Globe LEDs @ Dollar Tree stores in Portland Oregon a few years back. I put them in all around the house and not even a single one has failed. I never noticed if some say they are multi voltage. I could use them over seas! I recommended to friends who regularly travel to Mexico, which also uses 120volt AC, that they bring along a few of these for the Air B&Bs they stay in as they don't have Dollar Tree or low priced, quality LEDs like these in Mexico.
The tiny delay is a really good sign, it indicates a switch mode controller bootstrap... so that's going to be far more than a capacitive dropper.... the fact that it covers US and european voltages also indicates a switch mode.
At least it's adaptable.
James Lewis, Another electronics geek! I are one, too! I completely agree with your assessment. The dimmable ones probably have a Chinese designed ASIC, something similar to an 8-pin PIC, but with the concurrent logic that can be built into ASIC'S. It would have to look at the dimmer waveform to do a relatively simple DSP and be able to respond concurrently. It would most likely use PWM to adjust the level to the LED's to lower their output.
Are the 60Hz a maximum though or is it just 60Hz? Because if it's just 60Hz, it may not work so well in 50Hz-land.
@@ropersonline The frequency doesn't matter since the AC waveform is being converted to DC by the full bridge rectifier right after the inline fuse.
I bought a lifetime supply for $24.00 @$1.00 each! So far I have been using the same ones for over a year, and still, burn bright!
I loved these old bulb videos.
After seeing how tough these LED Bulbs are in you video, found six (60watt equivalent, 120volt only) LED Bulbs at my Dollar Store. Really bright warm white lamps!!! Thanks
I think you owe BigClive an apology.
This was interesting, thanks! I thought you were gonna measure the light output or power draw or something. I didn't expect you to defrankenstein it :-)
I agree that these are very nice bulbs.
I picked up several of the "60W equivalent" versions at my local Dollar Tree, and dropped one in checkout line. The 60W equivalent version has glass bulbs, and it shattered.
The gal wanted to swap it for an intact one, but I went ahead and bought the broken one. It works fine, and is actually a bit brighter than the intact ones. :-)
Dollar Tree now has 100W versions, also for $1. Even more amazingly, about a month ago I even saw two-packs of 60W bulbs for $1.
After watching this, I disassembled a Sylvania LED light bulb that had gone extremely dim.
What I've found so far is that the negative lead had a cold solder joint at the board (popped loose with no effort) AND the power supply is putting out 83.9 VDC.
I'm going to test out the chips with a small 12 volt power supply and see if I can use them in a project.
I'm thinking the power supply is NG. Not sure which component is causing the high voltage output.
I was tired of replacing standard bulbs in my daughter's flush mount ceiling light (3 bulbs) so I bought some LEDs. They were not THAT cheap, but the box said they run very cool. No lies. Three bulbs enclosed and running beside each other creating almost no heat to the touch and much better light. Two years, so far so good. I also have 130 volt standard bulbs in some lamps that have been running for over ten years now because they don't succumb to power fluctuation.
Very interesting to see the insides of this. Thanks for the video! I also liked the very cool sound of the bouncing bulb at the end!
we get two 60 w led bulbs made by the same "globe" from dollar tree... i love them they last forever
Awesome video! I bought 12 of these LEDs (dimmable /non-) at 99 cents store in La, Ca for only us$ 0.99 each
Walmart sells their brand of these LED light bulbs, 60 watt equivalent (9 actual watts used) daylight bulbs (non dimmable) 800 lumens, last 18 years based on 3 hours per day usage. 5000 K light appearance for $0.97.. I've bought a few and they work really well. I like your video because I have a GE LED light bulb that didn't last 6 months and I was wondering how to get it apart. I am going to try and take it apart since watching your video gives me an idea of how to get it apart. Thank you for this.
Thanks for the tear down. I had one of these go bad and after frustrating myself trying to see inside, decided to do a search. Tough little suckers to open up.
Just bought 60-Watt LED light bulbs at Wal-Mart for $3.97/box of 4. Non dimmable.
With a hacksaw I cut off some globes and use them as excellent point light on the workbench.
The same, in addition I cut off the other end as well and connected the led
to a 36 volt dc supply. Very bright, do not point at pets or children.
Why 36 Volts? Pure (filtered) DC so no flicker?
I'd like to connect most house outlets on battery DC so not even slight flicker and power when power outage.
Some outlets would need to remain 120VAC.
Re: 36 vdc, happens to be what that bulb power supply delivers, others may differ depending on the led chips used. My home made light fixtures have no space for anything other than the led panel so
power has to be from a remote source.( Re engineered lamps.)
Yes, I like the remote power source. I want table lamps with no cords.
An electromagnet below would power the lamp through a coil in the base. Batteries in the lamps would be a plus!
You should make a video about it and share it with the world!
Hello
Well done nice work.
I did the same work when I moved to my new house that was 6 year ago (2012)that time led bulbs were not cheap each bulb cast me £10 ($13) and each bulbs were producing 806 lumens if I want more lumens it was more money but I was happy with them. Since then I replaced one led bulb because it stop working I'm not complaining just telling 😁.
To me switching on to led bulbs were best decision 💪💪 . now days led bulbs went down by $$$ 70%.
Thanks for your video l love it and good luck.
My local Florida dollar tree just started carrying 60w LEDs. Until now that store has never carried LEDs. I was shocked! So I bought 30 of them and replaced the florescents in my house. Theres a lot less yellow in the house now, it's a lot brighter, and coupled with my white bathroom walls I should have some well lit shaves in the mornings from now on.
They are 2 for a buck here.
The hands down most awesome use for LED bulbs is the garage door opener. since that is an out of the way place to have to change a bulb. Also florescent do not operate in the cold as well... Be sure and dispose of your old florescent bulbs at a hazardous waste station because they contain Mercury.
LupusPurpura
Save one for giggles....25 years from now kids will marvel at them
same with fish! and us, we contain mercury too; and so does all the air that we breath; infinitesimal qty,to the point that one bulb does not matter; same as with one vote in a national election,food for thought,here,lol.
www.state.nj.us/dep/dsr/research/mercury-bulbs.pdf
That one is cool - with the internal refractor... The newer bulbs replace the entire power supply with just a bridge, a capacitor, and a single chip current limiter. It's only going to get cheaper and better from here on out. And, like others here, I've removed the globe to use in ceiling fans where a regular sized bulb won't fit. Thanks for the great video!
Thanks Adrian. I have bulbs that look identical in Australia. If I find some more I will take one apart. I use them in my studio for fill in lights when I make my TH-cam videos. My bulbs are 10 W 220-240V. I can't remember what I paid for them.
+Adrian Black:
That it's $1 IS pretty amazing. It really wasn't that long ago, when they were VERY expensive. And as we know, the price WILL (CONTINUE to) drop, even further, over time.
The delay is so iirelevant, that - for what these bulbs save one in usage cost, it's still a great buy. The only thing which would mean anything to me, is the light's colour quality. I prefer the ones which are as close to full spectrum as possible, but, for a general-purpose LED bulb, this ia great one.
Liked watching this - the durability of this bulb's AMAZING. I'd really like to get a tube of the glue the manufacturer uses to seal the globe on - WOW!
Always find these 'inner-working' videos interesting.
Thank you, Mr. Black.
I purchased Feit LED bulbs 60 watt equiv, 9.5 watt, soft white dimmables, in February 2016 and put one into service in January 2020. I used it to provide some background light for reasons and ran it typically a very long time every day (way more than 3 hours a day) and it "broke", i.e. dimmed out, in August 2020, so about 7-8 months. I bring this up to be able to relate that the bulb base, which looks just like in the video, so probably a standard look, was excruciatingly HOT. No touching it. I figure that the heat finally go to the components and/or the LEDs.
The replacement bulb, from the same pack, showed the same characteristic - it lit up fine but also got HOT - so it appears that 9.5 watt heat dissipation for long continuous use could be better, but the set was pretty cheap and there was no way to improve heat dissipation anyway.
I watched this 5 years ago and decided to watch it again today as I have a few minutes.
I couldn't believe it when I found this at dollar tree last year (I'm also in Portland). I bought two just to try out and they are still working great. Went back the next day and they were all sold out.
Finally came back in last week, the 60w. Dollar tree also had a package with 2 CCFL's so I bought a bunch of both.
Adrian,
Nice video. Thanks.
Gary
I'm glad to see that I'm not the only person in the world that is so easily amused with lights, especially LED's. Lol! Thanks for informative video!
you know about bigclivedotcom, right?
Interesting! Thanks for the video. We are wiser now. Off to the Dollar Tree!
if you want a good dose of cancer causing radiation just sit under a bunch of these
Adrian Black+ Have you thought of turning the light on for a while to heat it up and make the glue and or dome pliable enough to break loose and remove?
Good idea! But I would use a heat gun or a hair dryer for that purpose. Somehow, I believe that the adhesive would be formulated to be able to withstand any heat except the abnormal heat of a catastrophic failure of the circuitry by overheating.
Parts along inside the bulb is worth about $20.00 , 20 years ago 😀
They are high-quality bulbs, only dated. Dollar Tree picked them up for pennies on the dollar. This is their business model. This is also the beauty of Capitalism. Any true 'Dollar Store' could not survive if the public realized they only sold crap. Many high-quality items are to found... sometimes fleetingly. I see a lot of Philips and Magnavox branded products. Today's 'fads' sometimes wind up there a year later. Keeps folks coming in. If it seems too good to be true... stock up on it.
yeah that sounds about right
I found 100 watt equivalent LED bulbs at the 99 cent store about a year ago. They had both round and Spotlight. I have had the spot light bulb in the back yard on 24 hours a day for almost a year and it's still going strong. Luckily I bought about 10-12 of each.
i was just in dollar tree yesterday and saw the $1 led lights. i bought one to try it out and make sure they only charged me $1 at register. i screwed in the bulb shocked to find out it actually worked now i plan on buying some more ASAP. i live in NJ. I checked other dollar stores they had some leds for $3 each. so getting cheap everywhere
$1 stores always charge $1, $3 is not right in a dollar store. You must mean Dollar Family. Their prices are higher for certain things. I don't go there any more !
I am not so picky. I think that the merchandise at Dollar General is well worth their prices. Where I live there are Family Dollar stores and Dollar General. Neither charges $1 for everything in the store. In the true $1 stores, much of the merchandise is REALLY cheap crap. And I live on nothing but my Social Security, so I know what is cheap and good vs. cheap and bad. I would NEVER buy an FM stereo boom box from ANYBODY if it was only $1, especially if brand new. And the kitchen appliances like mixers, coffee makers, and things like that, would you take a chance that the quality would be so poor that they could only charge $1 for it that it might electrocute you or send shredded plastic into your mashed potatoes that could be swallowed by your child that would cause him or her serious injury? That is what you would get if those items were that cheap. As the old adage goes, "You get what you pay for." There is another: "Buyer beware." There is a reason why a publication like Consumer Reports exists. Some of these things are so bad that they won't even bother to review them. They figure that Americans are smart enough to avoid the worst trash out there on the market.
They figure they are safe giving a warranty on them since no one will make a claim on the warranty. By the time the light dies in a couple of years, the people will not have their receipt, they won't remember where they bought them, or they will realize that it costs more to ship the defective bulb back than it would cost to just buy a new one. I just replaced a LED bulb in my garage after only 2 years. I had bought it at Fry's, but there's no way that I have a receipt from that long ago. I decided to disassemble it and had as much fun as you apparently did. I was beating on it with a pair of side-cutter and it would *slightly* crumple, but not break. Eventually, I got a hole in it and used the side cutters to slowly snip away the translucent globe. After disassembly the rest of it, I see where apparently a resistor had burnt up, so for a few cents, it might have been possible to repair it, but there is no way to "disassemble" the bulb -- you can *tear it apart*, but that is about it. I also tried using a heat gun in the hope that the adhesive would soften enough for me to remove the globe. I managed to deform the globe, but it still was very well attached. After "disassembly", I salvaged it for parts that I might could use in other projects in the future. I haven't figured out what voltage the COB LEDs are using yet. I've tried from 9V up to 24V, but have not even gotten a dim glow from the LEDs.
I have a couple more of these LED bulbs that have died and I will be "disassembling" them also, but I need a more elegant solution than just "beating it to death with a blunt object"... :) I'm thinking that I'll just chuck it up in my lathe and cut a groove at the base of the globe to remove it.
That is a VERY good, if not GREAT, find!
I have opened a few LED bulbs, and that one is so far THE ONLY ONE that uses film capacitors at input, which means they will not dry up over time and lose capacitance like the electrolytic ones. The power supply unit is a pretty good quality, the casing is solid and uses aluminum heat-sink, apparently sufficient number of LEDs, IF they're rated at 1W each, but chances are it's less and they're over-driven.
It would be nice if they were 4000K (neutral white).
P.S.: It's not hard to open them with a kitchen knife, just cut the silicon glue by spinning the bulb with your hand while laying it on a carpeted floor. Relatively safe and easy.
That WAS a very nice bulb!..............................
I scrolled down to the comments as the video played out... heard the funny sound that the globe made while bouncing - had to scroll back up to figure out what was going on. Funny.
These are so well built that these will last over 22 years! Dollar Tree has very good products for s very low price. A very good store.
Thanks, I think it is important to add to be careful with the "bulb" I thought they were all plastic but found once a Crystal one... I was lucky it didn't burst when squeezing (no gloves at the time)
I love Dollar Tree. I got all my cologne there. It may not last as long as the $80 authentic, but after losing about a grand worth of cologne, I'll go ahead and spray every hour instead of every 5. Light bulbs specifically though, Fry's Electronics has em for like $0.50 now often
postage is going to cost more to return. Just bought couple for the garage area Walmart ones. Impressed with LED! Hated floresent offerings. What do you recommend for recessed lights in 65 w
Sometimes the big dollar store companies buy up huge amounts of surplus products in bulk at reduced cost. They pass this on to their clients. The bulb he has is a good quality one with a switching supply inside of it.
The metal structure should be the heat sink. The LEDs are mounted on a head conductive assembly to conduct the heat to the heat sink.
I barely find anything that fancy at my Dollar Tree. Best I saw a while back was Halogen bulbs under the "Sunbeam" label, and sadly after buying one, it went out after a few days. I remember a couple years back when they had CFL's at one Dollar Tree I went to and I didn't mind getting those anyway. Mostly Dollar Tree carries those "rough surface" bulbs that skirt on by despite being sturdier incandescents (though a few burned out on me anyway pretty quickly.).
My local Kmart had a four pack of LED bulbs (40w equivalents) for 90 cents today! They had plenty of boxes left, but no price to see so I had to check one of their price readers to find out (it was also a clearance sale of 70% off on all their bulbs in stock).
Damn! Those are awesome bulbs. Because they're also easy to repair! Not stuffed inside. Great build quality. IDK what about durability tho
LeanVlogs ★ yes, the expensive ones they fill them with goop to avoid you tampering with them. Main issue with this one could be little surface for dissipation, add to that they put very little heat transfer paste....
I bought one of these out of curiously for a bed light. It works very well, the globe stays cool but the metal base with the electronics inside gets very hot. And my local dollar tree always seems to sell a lot of them.
In Michigan, we similarly have $1 LED bulbs at Dollar Tree. My understanding is that these bulbs are subsidized by the local utility companies as part of various green initiatives, which (for Michiganders, at least) accounts for the amazing price/quality disparity. That bulb definitely cost more than a dollar -- the customer just didn't have to pay full fare.
every bulb in my house are this bulb and there great one has never burned out
I found these at Dollar Tree about 2 years ago I guess. Anyway I switched over ever light in the hose to them. I even have spares but I may not need them. I have not had any problems at all. And you can not go wrong for $1.
By the way the ones I got were 60 watt equivalent and 100 watt equivalent.
I BOUGHT A BUNCH OF THESE FOR MY HOUSE CONVERTING ALL MY BULBS TO LED BEFORE SEEING THIS VIDEO THEY ARE NICE LIGHTS AND USE A LOT LESS ELECTRICITY AND IS MUCH CHEAPER THEN ANY OTHER STORE AND SEEMINGLY BETTER MADE THEY ARE A GOOD BUY
PLUS... a FREE bouncy plastic ball - that's more fun than the light itself! :)
It’s possible that Dollar Tree got them as part of some type of close out deal where some company was just trying to get rid of them at or below cost.
Wow I only just noticed them in Dollar Tree about a year ago, but definately nice bulbs so far for me. Better than some GE bulbs I got from Home Depot. I've had a couple of the 4 or 5 of them I bought go bad, I'm guessing from the power supply.
omg it bounces. lol. I may just go pick a bunch up. I have all CFLs now, don't know if swapping them out before they die is a cost benefit to me. we're talking 9watts vs 6.5-5 watts each. Am I really gonna fire excel up to do a cost benefit analysis... maybe lol.
LEDs have several advantages over CFLs. The most important to me is getting away from mercury. When a CFL breaks, either you're going to have to go to great lengths to clean-up the mess, or be breathing mercury for a long time.
I just bought a Wein ionizer and I broke the antenna out of place. I opened it up and the antenna is not connected to anything. Please help me. You are so smart. Everyone wants me to throw it away. I want the vortex effect to work again. WeIN V-I 2500-N workThank you Lydia
I would have liked to see how bright it was after you removed the light inhibiting globe. Thumbs up for the vid.
I replaced every single light socket in my house from Great Value CFL to the 8.5w Great Value LED for $0.17 each. I didn't buy enough but, by then Walmart was only offering Great Value 5w LED bulbs for $0.17 so I ended install 10 5w Great Value LED bulbs in my mother's bathroom. Those 5w LED bulbs look at bright as the 8.5w LED bulbs.
These bulbs are good for the price. Been using them for about 2yrs now. Haven't had one konk out on me yet.
Great ending!
What a fantastic coefficient of restitution!
Adrian Black -- At 17:00 - Now you know what the Chinese do with Ping Pong Balls . . . . . turn them into lightbulbs . LoL !
Full bridge rectifier? Are there any half bridge rectifiers ? You choose your expressions randomly?
ngl i thought this was a vwestlife video for a sec, the table, and the fect that you're reviewing a lightbulb
Excellent job! 👌 thanks for share.
A really good tear down, tks for the info and good vid.
FYI, N=Neutral L=Line (This is "electrical speak"). Further- I am fairly certain that any device with hv circuitry (especially for residential use) must have a fuse to meet UL rating and approval. It's a liability thing (ca-ching).
I think the instant on feature refers to instant brightness as compared to a CFL bulb.
The amount of glue was probably like 10% the manufacturing cost... 😆
This one made me laugh 😂 3:30
Hey, for One ($1 U.S. Dollar) sure is an indestructible light bulb 🤣
So been watching Bigclive for a few years and this came up in the related. Have you looked at the walmart LED bulbs? They are like $2.00 for 4 now. Been using them in my house and they seem to work very well.Also, Ive lived in Salem for 40 years. Nice to see fellow Oregonian.
Our dollar tree had the same bulbs in 60 watt two in a package for a dollar, right next to the single bulbs for a dollar each. I was smarter than the average person and bought all the double packs. I put a pair in my outdoor flood light bases, it is partially covered by my roof, but they do get wet when it rains, so far no problems and they give off better light.
$1 for a 470 lumens is about a fair price. My LED light bulb has 1500 lumens and got it for £3.
I pay around $10 for 40W can be used with dimmer. No heat, light is instant and my electric bill has dropped since I install all LED, I had much rather have LED than CFL's.
CFL's come on dim and takes about a minute to reach the maximum light.
do you know if these would be able to be turned on using a 12v power source from a molux connector in a PC? they look bright enough, and fora dollar... dang! thats cheap
I'm just wondering if LED bulds put our so much heat why can’t they be used in the easybake ovens? I thought they gave off no heat. I thought that was the reason they couldn’t be used in those ovens.
Any sort of thermal detection and throttling on the circuit board?
So imagine somebody wanted to use a DC battery to power the bulb, what voltage should be fed to the board? And would it be acceptable to feed power directly to the LED board? (I'm thinking of making a glow-in-the-dark lure charger; flashlights work, but I can only imagine how good of a charge I would get if I were to take 2 LED boards from 800 lumen bulbs, mount them in an enclosure, and hook it up to a regular 12 volt battery with some kind of regulator on it.)
RealRuler2112 you would at least need a regulator for constant 12v dc output (eBay) as the battery will vary voltage and good dissipation (long story short constant voltage will increase the temperature). A better option is constant current but more cost and science goes into it.
I bought a cheap 60W LED bulb, put it in my garage and left in on. It's been on continuously for ~2 years now!
I would like to know what's the best led grow light to grow an how many watts we need to grow fast
Dollar Tree tends to get overstock high-quality items to sell them cheap, usually from companies that have gone out of business, or bought WAY too much and just want to get rid of inventory, or something along those lines. Some manufacturing companies will also over-produce in some cases because they expect a certain failure rate, but the actual failure rate ends up being lower, resulting in far too many good units. They sell that overstock so they don't have to entirely eat the cost as well. In other cases, it's items that are outside the stated specifications [maybe color temperature or brightness is supposed to be within 5% of a given value, and some end up in the 6-10% range but still work] and are sold for cheap -- again, so they don't eat the entire cost. In any case, it's good for value hunters!
I dropped one on concrete from 8 feet up and it bounced two feet but and still worked.
I did the same, an oopsy from up the step ladder, with an ordinary bulb you would be running for a dustpan and broom, with this one I wanted a baseball mitt to catch it with all that crazy bouncing, and it still worked when I screwed it in! Oh, and this was a NOMA brand, bought from Canadian Tire. They had a stack at the door of these going for .99cents.. But I went to the back of the store, and found another stack of boxes of the same- 3 to a box for the same price, $.99!!!!! that makes it come out to $.33 each! I don't care about the taxes, this was an unheard of deal... Oh, and this is for a 60 watt equivalent, not 40 watt. When I dropped one, i thought I was pooched, I swear it dropped 8 feet, bounced back up about 4 feet up, and bounced all over the place for about another 20 times before finally stopping, I couldn't believe it when it lit up when I screwed it in, like nothing had happened! It's still there in my hallway, lit up like nothing happened to it, a testament to the choice of materials and construction of these new LED bulbs!
OK I get it and thanks for your tip. Once it fail to work, I'll pass it to Kids as Christmas gift to be played as ball in the field!
Dropping a light bulb on a concrete seldom damages the concrete.
I have tried several brands of LED bulbs, mostly 60w equivalent. The only one with any problem was Globe branded. Two of them failed after a few months. They start shutting off, then on, then off. I opened one, and was impressed by the construction, but not working loses me.
My big question is, What is the transformer doing. From his description the fullwave bridge is right at the power source. that puts the transformer receiving D.C.. LEDs do not need a ballast. 110 V to 1.5V is a huge power drop.
I have been replacing my 1 and 2 tube Florescents with 12 foot LED ribbons. I use a 12V power supplies I have from toy chargers. I started doing this when the Florescents start flickering at start up.
I got a lot more light and more coverage.
What is the transformer doing? It is the inductor for a switching power supply. You are right that pure DC to a an inductor doesn't make sense, but if you pulse the DC you get a type of switching power supply. Why use a transformer instead of a plain inductor? If you check out the bigclive youtubes, he back engineers the circuit to a schematic at times (which this channel did not do) and says a bit about why they do things the way the do. Full wave rectification, unfiltered, appears as partly DC and partly as AC to an inductor.
The LED chips are generally all in series, and, although the chips are multiple light emitting diodes (to get more light), white LED chips drop about 3 V, the same as one white LED.
Really nice job! Thanks a lot!
Very good video.
LEDs basically are instant on (close enough, better than fluorescent for sure), and ambient temp should not matter. But.....I just checked $ tree, a buck! I'm on my way. Oh and their bulbs are 60W. Great video! You're a genius? I was hoping to see what to do with the remains but I'll figure out something. By the way, you kept talking about heat. I thought LEDs make no heat. So I just touched my $15 100W equivalent Phillips that has been on for a few hours. How do you like your eggs. Great video. Thanks
Globe Electric is Canada's fastest growing lighting and electric products manufacturer.
Did dollar tree buy these at a bankrupt liquidation somewhere ? Because that product is expected to be sold for more than $1 and only in Canada (bilingual packaging is for Canada)
Do you know what the output voltage is to the light board?
YOu should try running DC current through the LED. I bet it would work and would save even more current because it would not have to run the converter section.