Just for interest, the colour temperature of 6,500K is historically associated with black and white TV. It was called D65 in TV broadcasting and was measured, I think in Los Angeles, to set the standard colour temperature for CRT phosphors. I think they accidentally chose an overcast day which I think is unusual for LA. The D stands for Daylight. It explains why TVs in colour movies always look blue. For anyone who remembers Pebble Mill at One which was shot in the foyer against a glass wall open to the outside, there was a constant engineering fight both to white balance the cameras to that temperature (before auto white balance) and to illuminate the set to such a bright level. This involved vast amounts of lighting and hence power. On a day when there'd just been a new lighting desk controller, computerised, installed and no pattern had been set up and the 'clever' desk assumed that everything must be at full level. Inevitably this blew fuses at the local sub station due to the enormous phase imbalance and excessive load demand. 😂😉
I’m pretty sure it suffered from the same issue that all early phosphors had, namely a narrow uneven band of emission. It was the same thing that plagued fluorescent lights. They always looked terrible no matter what the color temperature was. That said the black and white phosphor was reasonably well optimized for what it was. I wonder what a black and white picture would look like on a panel made with super-accurate white LEDs that emulate true black body radiation spectrum? It not only shows the picture, but provides pleasing full spectrum lighting to your room like there is a moving picture in front of a sunlit window.
I've been using a similar light, just like the on you showed, for the last 18 months, in my kitchen, a 10 watt one. I replace an old 4 ft batten . With no problems whatsoever. What I did was to modify it, but installing a smart switch so I could use it with Amazon Alexa. It's great when you got your hands full like carrying mugs of tea. You can use you voice to turn the light on and off, plus you can still use the wall switch for those that are still stuck in the 20th century or before., now I'm using 10 watts of power instead of 36 watts
Ha! you think you are cleaver, I sit a garden solar light on my windowsill and it light the hall and stars to save me even putting the main lights on :-)
I jumped extra out of bed at 1.50 am to see you pushing that fun button. The Hopi delivered to me is gen 8 and no longer has the frequency display let alone the fun button.
Nice that they omitted the stuff that stops it going on fire in case of failure, but I guess that just adds "character"... :P (and as a random aside, I bought a little cheap (£2.50) battery powered lamp thing from Poundland yesterday cos it looks neat, 6x LEDs running in parallel directly off 3x AAA cells, touched the LEDs while they were lit and ouch, they get hot!!! Still, I have complete conversion modification plans afoot, so, no bother!)
The fuse is the leads to the fitting, they are that thin fusible wire so beloved by the PRC manufacturers, solderable, but also only capable of handling 200ma of current as well.
I'm glad you made this video. I bought two of these a couple of years back. I'd forgotten about the slide, so hopefully I will now remember. Mine came without any clues about the slide and I pryed the thing apart. Just popped one of the ceiling. The back contained a few thousand dead midgies. That's a bonus I'd not anticipated. Mine's120 led and spiked not screwed.... So I'm screwed-ish for removing the panel. Hey ho, it works well as is and eats more bugs than my Drosera so win-win.
BC I believe the Edison adapter shown on the box was for the US market to make it easy to install because the hole spacing does not work with plastic piece into our electrical boxes.
Nice unit, I have seen the slide on feature on some standard UK bayonet light drop ceiling roses, although executed somewhat more robustly. Downside is the hospital white colour temperature - would be useful if it were available in a warmer white .
Thanks Clive, the mounting method is handy as you just need to replace the housing. They will be ideal for my shed as it is big and the two tubes currently used do leave dim areas. In the UK on Ebay it costs £8.50 & £3.50 postage, there could be other listings elsewhere. Good posting mate 👍
I was just about to comment about this. NO way you could connect this according to electrical regulations in my neck of the woods. Well, at least without having an extra connector box between the lamp and the ceiling, which would look just great...
Oooh, much appreciated, the analysis! I just recently got a whole bunch of those for renovations... bigger version though. Some of the square ones, some round ones, and a couple that can be controlled by remote for dimming, color temp, and whatnot. Mostly not for myself, new apartment for rental. Installed it myself, kind of a hassle. xD But way easier than most other options I guess. Didn't know about that adapter though... not that I was going to use it, but interesting to know nonetheless. Got a few extras exactly because of the ease to replace them. Also because they are fairly well enclosed, to this means no bugs to clean up. I made an effort back when I moved to my place to put sockets all over so that I could replace LED bulbs easily, but these days the LED panels are kinda winning out. Just because if you are going to go all bulbs, you kinda also have to invest on more expensive luminaires to make it look fancy. xD o/
The landlord here started installing daylight bulbs in the building when I showed her the ones i moved in with and before that I had showed one to a person that lived in front of a cemetery where they love that one and says till this day that it still works. Same bulb was installed for a place I worked for where it aided paramedics when they came to dark locations outside the building. I have some leds hooked up to those tuya IR transmitters and some on those switches where I can give them voice commands, add timers and even have the vibration sensor activate them when one knocks on the door.
I used lighting sockets in domestic and commercial jobs because they make decorating ( in domestic installs) and servicing ( in commercial situations) much quicker and easier. I think the ones I use are Legrand and don't have exposed metalwork when connecting and disconnecting.
Love the video. The box says Voltage 85-265V 50/60Hz Wow 18 watts rating at 17 actually good labeling still no ground :( Happy thanksgiving to all of you Americans out there
Teardown and reverse engineer the Hopi/AnTai meters, hacks and mods😉... It seems the light output remained relatively the same after removing the 15ohm resister and then adding a 2.2ohm, while the wattage was reduced by realistically half. Of course my screen could have something to do with the observation.. Thanks Clive.
These type of lights are handy if you want to install LED downlighters in a building with a flat roof where it would be almost impossible to install can style lights due to lack of room above the ceiling
Happy Gratitude Day .. I vote all 96 LEDs burst promptly into flame .. Finally makes a warm light instead of that cold sunburn whiteout light it provides out of box.!
6500K (Kelvin) is not “very cold” white. It is in what is called the normal “Daylight range” which is from 5500K-6500K. It is therefore in the cold end of the daylight range. The problem is that we are far too used to the warm end, so when we see something “normal” it is abnormal. Just a note - as a photographer with 50+ years of experience.
Seems like a good little light, would definitely need modifying though to keep it cool! Or drill a load of holes through the back plastic... Shame about the colour temperature!
That's a neat idea for the mounting system, but...what does the mount attach to? It's possible my sense of scale is off, but that doesn't appear to be large enough to cover a J-Box, and it ships with bare wires, not terminated with a wall plug... Very confuse!
Clive has explained it many times.....the branded Hopi is not accurate at low current levels. The new one reads all the way down to almost zero current levels.
I was called out to a suspect faulty one of those but found it had just slid off the connection on the ceiling. I couldn’t bring myself to charge for the call out fee.
Good design for the leds but too bad tgey dont pot thebplate to get rid of the heat .if i was a mnufacturer i woukd just buy the led and have somone cast and aluminim or zinc case for potting the led
I'll never understand why people would buy that horrific morgue-white-light for illumination. Warm white would be nice... it has a nice mounting system (and a ridiculously short mains wire)
Would rather have a round version since the base is not clockable, wouldn't be a fan of this light, when I worked in the field I would run into odd fittings, without some indication of how to remove it is very frustrating especially if the customer is watching you.
![[1617] Unusual Mechanism: Wellington 5- Lever](http://i.ytimg.com/vi/Rq4kS1XNOmw/mqdefault.jpg)
![SAFEPLANET - ดาวเคราะห์ [ THE PLANET ]](http://i.ytimg.com/vi/4X1XL3I_k3c/mqdefault.jpg)
Just for interest, the colour temperature of 6,500K is historically associated with black and white TV. It was called D65 in TV broadcasting and was measured, I think in Los Angeles, to set the standard colour temperature for CRT phosphors. I think they accidentally chose an overcast day which I think is unusual for LA. The D stands for Daylight. It explains why TVs in colour movies always look blue.
For anyone who remembers Pebble Mill at One which was shot in the foyer against a glass wall open to the outside, there was a constant engineering fight both to white balance the cameras to that temperature (before auto white balance) and to illuminate the set to such a bright level. This involved vast amounts of lighting and hence power.
On a day when there'd just been a new lighting desk controller, computerised, installed and no pattern had been set up and the 'clever' desk assumed that everything must be at full level. Inevitably this blew fuses at the local sub station due to the enormous phase imbalance and excessive load demand. 😂😉
I always thoght 6500K looks very unnatural and has nothing common with day light.
I’m pretty sure it suffered from the same issue that all early phosphors had, namely a narrow uneven band of emission. It was the same thing that plagued fluorescent lights. They always looked terrible no matter what the color temperature was. That said the black and white phosphor was reasonably well optimized for what it was. I wonder what a black and white picture would look like on a panel made with super-accurate white LEDs that emulate true black body radiation spectrum? It not only shows the picture, but provides pleasing full spectrum lighting to your room like there is a moving picture in front of a sunlit window.
Interesting, thank you.
"They all bake!" Welcome to "Cooking with Clive." Great video. 👍
I've been using a similar light, just like the on you showed, for the last 18 months, in my kitchen, a 10 watt one. I replace an old 4 ft batten . With no problems whatsoever. What I did was to modify it, but installing a smart switch so I could use it with Amazon Alexa. It's great when you got your hands full like carrying mugs of tea. You can use you voice to turn the light on and off, plus you can still use the wall switch for those that are still stuck in the 20th century or before., now I'm using 10 watts of power instead of 36 watts
Ha! you think you are cleaver, I sit a garden solar light on my windowsill and it light the hall and stars to save me even putting the main lights on :-)
"I hope it doesn't burst into flames"
Burgle us of *all* the excitement, why don't you?
I jumped extra out of bed at 1.50 am to see you pushing that fun button. The Hopi delivered to me is gen 8 and no longer has the frequency display let alone the fun button.
Nice that they omitted the stuff that stops it going on fire in case of failure, but I guess that just adds "character"... :P
(and as a random aside, I bought a little cheap (£2.50) battery powered lamp thing from Poundland yesterday cos it looks neat, 6x LEDs running in parallel directly off 3x AAA cells, touched the LEDs while they were lit and ouch, they get hot!!! Still, I have complete conversion modification plans afoot, so, no bother!)
The fuse is the leads to the fitting, they are that thin fusible wire so beloved by the PRC manufacturers, solderable, but also only capable of handling 200ma of current as well.
I'm glad you made this video. I bought two of these a couple of years back. I'd forgotten about the slide, so hopefully I will now remember. Mine came without any clues about the slide and I pryed the thing apart.
Just popped one of the ceiling. The back contained a few thousand dead midgies. That's a bonus I'd not anticipated.
Mine's120 led and spiked not screwed.... So I'm screwed-ish for removing the panel.
Hey ho, it works well as is and eats more bugs than my Drosera so win-win.
BC I believe the Edison adapter shown on the box was for the US
market to make it easy to install because the hole spacing does not work with plastic piece into our electrical boxes.
Super Cool. Thanks Big Clive. Love the LED tester. I got one similar that displays current as well.
I was wondering what the current was. Time to upgrade Clive. 😊
Nice unit, I have seen the slide on feature on some standard UK bayonet light drop ceiling roses, although executed somewhat more robustly.
Downside is the hospital white colour temperature - would be useful if it were available in a warmer white .
Looks like s RIP off of the klik's system I have standerdised our factory on.
I hate that color temperature... I always feel like somebody is going to yell at me " And now you will talk" 🤣
Thanks Clive, the mounting method is handy as you just need to replace the housing. They will be ideal for my shed as it is big and the two tubes currently used do leave dim areas. In the UK on Ebay it costs £8.50 & £3.50 postage, there could be other listings elsewhere. Good posting mate 👍
Such a generous length of mains cable supplied with it!
Lucky if passes through dry wall ceiling.
I was just about to comment about this. NO way you could connect this according to electrical regulations in my neck of the woods. Well, at least without having an extra connector box between the lamp and the ceiling, which would look just great...
I prefer light fixtures with a terminal block inside so I can connect my own cable.
That's a neat no-fuss mounting system.
Oooh, much appreciated, the analysis!
I just recently got a whole bunch of those for renovations... bigger version though. Some of the square ones, some round ones, and a couple that can be controlled by remote for dimming, color temp, and whatnot. Mostly not for myself, new apartment for rental. Installed it myself, kind of a hassle. xD But way easier than most other options I guess.
Didn't know about that adapter though... not that I was going to use it, but interesting to know nonetheless.
Got a few extras exactly because of the ease to replace them. Also because they are fairly well enclosed, to this means no bugs to clean up.
I made an effort back when I moved to my place to put sockets all over so that I could replace LED bulbs easily, but these days the LED panels are kinda winning out. Just because if you are going to go all bulbs, you kinda also have to invest on more expensive luminaires to make it look fancy. xD
o/
i love how you went caffeine free and switched capacitor discharge.
The landlord here started installing daylight bulbs in the building when I showed her the ones i moved in with and before that I had showed one to a person that lived in front of a cemetery where they love that one and says till this day that it still works. Same bulb was installed for a place I worked for where it aided paramedics when they came to dark locations outside the building.
I have some leds hooked up to those tuya IR transmitters and some on those switches where I can give them voice commands, add timers and even have the vibration sensor activate them when one knocks on the door.
I like it with the modification of course 😊 thanks Clive
4:18 every time you use a finger to check for charge in a cap i have to look away 😆
"I like shocks when i know that i'm getting them" >> Unique, profound and unforgettable element of character no less.
due to camera strobe effect the led super tester showed all 7 segments as 8 throughout. otherwise good reverse video as usual.
I'm a 5000K man myself. Photographic white point(ish).
13:52 Odd that the power supply is rated for voltage starting at 165 VAC
I used lighting sockets in domestic and commercial jobs because they make decorating ( in domestic installs) and servicing ( in commercial situations) much quicker and easier. I think the ones I use are Legrand and don't have exposed metalwork when connecting and disconnecting.
Happy Thanksgiving!!!
Nice looking light. I like the color too, daylight LEDs are kind of hard to find because everyone wants soft white or warm white.
A bit like the Klick lighting system
Agreed,
Love the video. The box says Voltage 85-265V 50/60Hz
Wow 18 watts rating at 17 actually good labeling still no ground :(
Happy thanksgiving to all of you Americans out there
I've used the smaller 4 watt puck shaped one of these as a small area light in a storage area for short duration use.
Teardown and reverse engineer the Hopi/AnTai meters, hacks and mods😉... It seems the light output remained relatively the same after removing the 15ohm resister and then adding a 2.2ohm, while the wattage was reduced by realistically half. Of course my screen could have something to do with the observation.. Thanks Clive.
6:27 Channeling your inner Electroboom?
Hmm, I liked that. Hackable as well. Could be useful.
These type of lights are handy if you want to install LED downlighters in a building with a flat roof where it would be almost impossible to install can style lights due to lack of room above the ceiling
Thats not a saucer? its square, what a swizz its says its a saucer light. 🤣🤣
Thanks for looking at so we dont have to buy one. 2x👍
Happy Gratitude Day .. I vote all 96 LEDs burst promptly into flame .. Finally makes a warm light instead of that cold sunburn whiteout light it provides out of box.!
nice !
Of course you could put a red filter on the LED tester display...
I've used up all of my standard red filter material. I should get another sheet.
6500K (Kelvin) is not “very cold” white. It is in what is called the normal “Daylight range” which is from 5500K-6500K. It is therefore in the cold end of the daylight range. The problem is that we are far too used to the warm end, so when we see something “normal” it is abnormal. Just a note - as a photographer with 50+ years of experience.
8000k and 9000k are cold for me 🥶
Handy light unit, I wonder if it is available in different colour temps? 6500K would be more suited to outdoor use really.
Is this capacitor charged and then he immediately sticks his finger over it lol
"Mmmm... Nope."
Yeah, I laughed at it too. ;)
💡
Is cool phosphor inexpensive compared to warmer phosphor ? I do not find that whiter than white to my liking!
Good video sir
The colour choice is often a regional thing. People in cold countries prefer warm light.
Baking LEDs is how companies got over the fact that otherwise they last far too long for their profits...
❤❤❤
Seems like a good little light, would definitely need modifying though to keep it cool! Or drill a load of holes through the back plastic... Shame about the colour temperature!
That's a neat idea for the mounting system, but...what does the mount attach to? It's possible my sense of scale is off, but that doesn't appear to be large enough to cover a J-Box, and it ships with bare wires, not terminated with a wall plug... Very confuse!
I like the mounting system but definitely wish the color temp was more towards the yellow end of the spectrum
I got this light in warm white, it is plenty bright and fine for a garage or storage room, and very cheap
I was curious before the mod if you measured the temperature of the board after it had been on for a bit. 17W over that area probably isn't too harsh.
what does the FUN button do
Initiates self destruct, 5 - 4 - 3 - 2 -1 🤯
It causes random lawyers to explode.
Kind of wondering what happened to the Hopi meter
Still here.
Clive has explained it many times.....the branded Hopi is not accurate at low current levels. The new one reads all the way down to almost zero current levels.
Illuminent D, if i remember correctly.
In china they write led arrangements like this....4B24C (4 parallel line of 24 in Series)
Do you have a link to it, please Clive
I got this one a while back. Not sure which of the sellers it came from.
I give this thing about 3 weeks until the first LED dies
I was called out to a suspect faulty one of those but found it had just slid off the connection on the ceiling. I couldn’t bring myself to charge for the call out fee.
Good design for the leds but too bad tgey dont pot thebplate to get rid of the heat .if i was a mnufacturer i woukd just buy the led and have somone cast and aluminim or zinc case for potting the led
is the"o"in the DP95O2AB actually an "oh" or a zero?
I believe it is a zero.
I wonder what the I.P. rating is ? Is it suitable for bathrooms ?
I'd not use it in a wet area.
06:24 beetlejuice beetlejuice beetlejuice
Is the capacitor loaded? No! Sorry for you… hahaha
I'll never understand why people would buy that horrific morgue-white-light for illumination. Warm white would be nice... it has a nice mounting system (and a ridiculously short mains wire)
Would rather have a round version since the base is not clockable, wouldn't be a fan of this light, when I worked in the field I would run into odd fittings, without some indication of how to remove it is very frustrating especially if the customer is watching you.
6500k is useless
6500k is just nasty and should be banned.
🪦 R.I.P Hopi meter
It's still around.
Hopi is fine.