Simple Cheap High Current Power Supply From A Microwave Oven Transformer
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- เผยแพร่เมื่อ 2 มิ.ย. 2020
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My bad in the vid I said take a turn out - I meant put a turn in - more turns higher volts lower amps - less turns lower volts higher amps - sorry - วิทยาศาสตร์และเทคโนโลยี
OK, I found and subscribed to your channel because I saw one of your video thumbnails, and actually thought you were my estranged uncle, I've heard of twins, separated at birth, but I'm saying he's got a out 6 yrs on you,but for the un aware,you guys could really pass as the same! VERY funny, we are from alexandria N.H. he's not familiar with youtube,TH-cam, I showed him! He's a engineer genius, can't move around much in his house because of all the Bridgeports/ lathes/ importants that have been retained for projects. I admire what you do and have learned so much from you. This funny twist has brought my uncle and I much closer, and I'm learning from him also. Thanks for all you do.( he was even wearing one of his many favorite blue collar shirts( light blue,of course) when he saw your video,he doesn't wear much else) hilarious!
When I worked on TVs about 20years ago I had a set come in with a weak crt those old boosters we used on old tube sets wouldn't work on a solid state TV because in a SS tv the filament voltage comes off of a winding on the flyback trans which made it a high freq. voltage I think it was 15750 khz. One day I was looking at the schematic of a RCA set and thought why couldn't I add a few windings on the fly back to increase the filament voltage. I found out 1 turn of wire around the core was about 1volt I usually used some 20gauge telephone wire! That worked perfect 3turns in series with the original filament winding gave about 8 volts on the filament of the crt and a lot brighter picture. Never had one come back. Oh yeah you had make sure when you connected the new winding in series with the filament voltage that you had the polarity correct. Fun memories!
Spectacular. Truly. I've watched so many builds for a dc power supply and yours is fantastic. Your videos helps me more that any other on the internet. Thank you
You continue to impress mate! Thank you, these are amazingly useful. Much appreciated!! 👍
After so much I've seen and heard about rewinding MOTs, this must be the most refreshing thing you can get as a demo, so I can only praise your relaxed way of making the real facts available to everyone and ending it for good with the usual ghosts about transformers, of whatever type.
Congratulations.
Greetings from Portugal.
cheers mate - thanks for taking the time to post
I have a whole stack of the MOTS stashed away, it is very inspirational to see this.
now I am jealous lol
Really interesting project giving someone's junk a new life. I look forward to seeing it in use in the next project.
Thank you for posting this 'electrifying ' video, it was very inspiring and has me motivated to build 1 myself and get all charged up in the process 🙂
Thank you for taking things apart and recycled materials reused to make an invention like a sherlock homes and MacGyver...
Appreciate your efforts in explaining what and how. Really cool
Loved your video. You are very charismatic! Love the way you present things. Thanks for sharing.
Glad you enjoyed it!
Absolute inspiration. I liked your suggestion to set up the 240V side first with full insulation, etc. then I thought, to enclose the 240V side that will also act as mounting for the transformer. The other thing you may want to do is to make 2 x 6V windings that you can then configure to 6V at (higher current) or 12V and with the option of using it as a centre tapped to reduce the number of rectifiers in the 12V configuration.
I like that mate - I went for utter simplicity but a centre tap pig tail would be super simple too and give options - nice one - cheers
This guy is amazing, like really amazing. Thank you so much for doing all these videos.
You have given me a new love of all things electrical, love all your videos
cheers mate
Great guy - I love the way he explains ... thanks dude!
Entertaining and informative; love his cheerful demeanor.
Just received my variac today now I have a project other than my heating mantle.
Thank You sir!
cool mate - cheers
Awesome again, the money saving science expert 👍 put an extra turn in to increase the voltage as Robert states in his full scroll down description 😉
thank you for bothering to read that mate - I have had several comments already for that slip of the tongue - it was late and I din't fancy redoing that part of the vid so I put it in there - most folks - of course - haven't read it lol
This is that kind of experiment every tinkerer must do at least once in his lifetime. Thumbs Up mate.
lol - for sure mate
I just love the logic you posses Sir. Reusing a microwave transformer is just the best bang for the buck ever invented for sure. I have made a few and am confused when people ask me of how I made a power supply or how much it costs. Keep up the great work and am looking forward to your finished products. Good day and peace too Robert. VF
for sure mate and cheers
@@ThinkingandTinkering Keep on making great videos Robert for us all to enjoy online. Stay virus free also.
I'm sure you know this, but for anyone who doesn't, once you rectify that 12v AC, you'll end up with about 17 volts DC, because AC is measured on the mean (RMS) - not the peak like DC.
To determine what your final DC voltage will be, you need to divide your new transformer output by .707, so 12 ÷ .707 = 16.97 volts.
It may not matter in your particular setup, but for someone expecting 12 VDC, they might be puzzled... 😁👍
Ture talk no lies long time i anit hear bout peak to peak...now on his project we could use a 12volts voltage regulator an a 2n3055 n get that 12volts more stable...more electronic to add to better the power supply
I did one of these for a project and it’s nice to have a very robust 12v supply at my bench. I did include a little smoothing on the output with an electrolytic capacitor. I also did a similar one with an adjustable momentary circuit to spot weld nickel tabs on 18650 cells. I keep a spare transformer in case I need to work up a different voltage. I was thinking of a secondary winding with two or three tap outs on the next one. You can get high amperage rectifiers easily on eBay.
awesome mate - thanks for sharing
Excelsior! Outstanding mate! Enjoy every video and you are an inspiration to me and the world!
Wow, thank you mate
@@ThinkingandTinkering what kind of bridge rectifier do i need to use to make a 24v power supply
Back when I was a teen, a long, long time ago, CB radio was all the rage. I built a 12v power supply by re-winding an old tube power supply with heavier gauge wire for high current low voltage. It worked great although was a tad low. Should have put another turn or tow on it. I'm going to keep an eye at my recycling center for old microwaves in the future.
awsome mate - cheers for the post
Super excellent idea great use of recycling and great power supply that is one of my next upgrades thanks
glad you like it - cheers
You remind me of an uncle I have. lol I learned so much stuff from him when I was growing up. yeah !
cheers mate
U are very knowledgeable sir! I enjoy your videos quite a lot!
thank you mate and thanks for taking the time to say so
Your videos are delightful.
I am going to have to build a playlist just on microwave transformer uses.
I love all of these projects. What's great is you may have most everything you need lying around. If not one of your neighbors probably put one out by the road.
I should do that too - the uses of MOT's just grew lol
you are awesome sir, love every video thanks.
Good to know about the supplies. I'll take them out before I send my broken microwaves to the tip.
cool mate
Hey Rob Sir, great power supply gives an answer to my question, lovely informative video, Yes some people are scared of 12V coz they get a heart attack if at all they hear the Whizz n buzzing sound of electricity 😅😅😂😂😂😂😂🌹🌹🌹🌹
Hi Robert,
Just subscribed. The bit about holding the positive and negative on a 12V supply was my primary takeaway. I’ve recently moved aboard a 34’ yacht and I’m trying to get to grips with the 12V supply internally. Living in a 12V world seems very different. (I’m a biologist so electricity terrifies me 😂😂😂).
thanks for the sub mate - and good luck with your yacht - i'm just a tad jealous
Robert Murray-Smith I’m moving from Belfast to Cornwall so you’re welcome to pop down and laugh at my wiring! 😂
And drink my booze stash!
Very cool. Now if only dead microwaves were more commonly in the rubbish around where I was.
For anyone wanting to build one of these, you have 2 things to watch out for when it comes to your output voltage:
1 - With those bridge rectifiers you end up with 2 inline diodes at your output, so subtract a volt or so (0,6 - 0,7V per diode). That's not that problematic at 12V, but could be if you wanted to make a low voltage for a single cell device.
2 - When you measure the voltage output from your bridge rectifier, it's an averaged voltage (RMS incidentally). Being rectified AC, the waveform is choppy, with peaks at 16,9V for a 12V AC waveform (multiply the RMS value by 1,414 [the square root of 2])
Hopefully I'm not taking anything away from a future video here, Rob.
lol - no it's good mate - I am glad you posted the help - it's part of what I like about the channel - how much folks help
Nice demo - thanks
The 12Vac RMS when full wave rectifed will give you 0.90 X 12 V rms = 10.8 V D.C. average minus the full wave diode drops of about 1.0 volt each at high current ( two diodes conduct on alternate halfs cycles). So you get a full wave rectified or dirty D.C. output of 8.8 Volts average. The peak voltage of that full wave rectified or dirty D.C. will be 12 x 1.41 minus two diodes drops ( 1.0 V each at load) or about 15.0V. If connected to a 12V lead acid battery, the battery will act as a filter to smooth the dirty d.c. I suggest if you do connect to a lead acid battery you put a a 55w 12V halogen globe in series as a current limiter. They are very low resistance at low voltage across them but limit current should your load short circuit.
Barry Moore excellent advice!
nice one mate - thank you
@@ThinkingandTinkering halogen globes can be put in parallel for more current too. It's cheap insurance against a fire from a short circuit. It's not a new idea to use a globe as a current limiter. My Hornby train transformer in my childhood had one behind a red plastic cover. When the toy train derailed and shorted across the rails it glowed bright red. Loved those days ... lots of derailments.
dang.. it seems like when I get an idea of doing something and come to a thinking point you always seem to hit the nail on the head.. I needed a 12 volt dc power supply with 30 amps.. I was just starting to think of a way to do it and boom! "there ya go" I just love love the road less traveled.. so many things lay there unrealized there.. I just wish the haters could realize what you are doing.. they could be so much more complete as a whole if they had some adventurous spirit to them to see what you are doing here... As always Rob.. thanks again... carry on!
Or use an atx computer power supply with 30a on the 12V rail. It is regulated and you get it dead cheap.
@@JonnyDeRico Yup jonas that is a good one also.. but I have tried that I actually made my first bench power supply out of one.. but they have to work to hard for 30 amps and I am trying to keep the heat down a bit.. But thanks for the idea.. it is a good one for sure... I still have the old bench supply mod.. I use it for running my cb base unit and charging my cell phone..
Unless its about fiddling around with a MOT, an ATX-supply from the junk bin is the sensible solution, like jonas pointed out. If need be, you can get rather beefy server-power-supplies (> 1kW) extremely cheap on ebay.
tinkmarshino: use a car battery, voltage is a bit higher but doesn’t need a rectifier and piece of wood. Still need thick wires but if you have jumper cables you’re good to go. Will need to charge it of course.
Cheers mate - and folks are dead right - you can get power supplies from all kinds of places - from buying one to reusing other equipment and even just a battery - but as you see - that's not the point lol
Telecom here in the US uses -48 volts to power everything. You can get a little bit of a tingle from that on occasion. Especially if you are a wee bit nervous and sweating up a storm. You do have to be a little careful because of the 10,000 amp battery backup.
And then there is the ring voltage which can give you a bit more of a "tingle"... :)
Thankyou excellent work
thanks so much for your efforts!
glad you liked it - cheers
Nice to see practical advice in action. And I caught the "memo" that you meant ADD a turn to the secondary. You had me going there.
Now my own project issue is I have a nice 6A transformer with 110VAC > 40-0-40 secondary. Following that is a 10A bridge rectifier so it's wired full wave. So far, so good; it reads 40VDC on the two rails, compared to the center tap. But when I add in some smoothing capacitors - 4700 uf, the DC reads 60V. Too high for me by 5 to 10 Volts, because of the 55VDC input spec. limit of the adjustable buck converter it's meant to supply.
What's a suitable way to cut down 5 to 10 volts and still have a supply of 50 volts up to 5 Amps for my project? Power Resistor? String of 10A diodes that I have plenty of?
Another good place for massive transformers are old fashioned UPS boxes (uninterruptible power supplies - for computers/servers). Lots of them get thrown away by IT departments. Easy to snag them, and disassemble. Sometimes the only thing wrong is a bad battery, but the replacement is more expensive / time consuming than a new one - which is also more efficient.
good pointer mate - thanks for that
Thank you for this video
Well done my friend.
Very simple and very good explained. As you said: Don't be afrait of 12 Volts; 240 Volts is a differnt story. BUT: Be careful with high amps vs. diameter of wires! They may become hot if they are too small. I made my donkee bridge to say: Roughly 10 amps per square millimeter - than you are on save side. So with 50 amps 6 mm sqare is ok.
But you can take (I think) an ordinary cable 3 x 1,5 mm2 and run the single wires parallel. You have than 4,5 mm2 - just enough to take 50 amps. (A little bit over the above "donkee bridge, but for short cable up to 4 m should be ok)
for sure mate - you must check the ratings - but that is all over the net and the do change for installation method but in free air the rating for 4-6mm cya should be fine for this amp draw
@@ThinkingandTinkering Just to nitpick, is wire stuffed into a transformer and then enclosed in a shielded box actually free air? I would expect some derating in that use case.
Creative idea, thanks :)
I would use a pc power supply myself. The 12 v rail always is about 20 amps., I believe. More amps in psu's from the 90s. I have a few of these big trafos myself. I try to steer clear from mains even though I know with a few precautions you are safe. But it is damn interesting making your own hydrogen!
for sure mate - and nice advice - cheers
Nice video! Dry skin has megohm resistance but the electrolytes inside are highly conductive. Cuts in hand could put 100 mA across the heart from a 12vdc source and put the heart into fibrillation. Better to err on the side of caution.
you are right mate - you really should avoid standing in a bathtub dressed in chainmail if working with this - I joke obviously - thanks for the tip mate
I rewound a microwave oven transformer a few years ago. I have yet to get more parts I need...and design. I made mine for a high current 6 and 12 volt battery charger; made two secondary coils using proper transformer wire gauge 10. Got some wire from a shop that rebuilds electric motors. I don't recall exactly what the final voltages were but should be at least 7 and 14 volts, for losses and to push power into batteries when near fully charged.
I still have not decided or found a very simple high current capable circuit design, but I want to be able to control the current, limit it. I want to have full manual control to handle all types and conditions and situations and sizes of 6 and 12 volt batteries. I need to be able to monitor both the voltage and current. I plan to fuse the DC side at max 30 amp. The transformer is able to handle more, but I do not need more when I can limit the current.
For two examples: 1/ Charging a very large heavy equipment battery that is low, can pull a lot of current, which is why they make very large battery chargers for this. A 30 amp charger can do the job by limiting the current and charging more slowly; increasing the current bit by bit to keep the charge voltage about 1 volt above the batteries voltage.
2/ Attempting to restore a badly scaled and shorting battery, by trickle charging, by limiting the current, and very gradually increasing the current as the sulfur scaling dissolves....hopefully.
"Smart" chargers can't handle all situations. I want a fully capable charger, and me be the smart part....hopefully ;-)
I have been looking at some pre made circuits people are using but they are low current and look flimsy. I have been achieving current limiting control with store bought basic transformer battery chargers, by adding inline various automotive light bulbs.
I will order a high current bridge rectifier ASAP, and get this project back on my work bench...schedule lol
A decent charger IMO, also needs to cut off when the battery is charged, when the smart part, gets distracted. A timer could work as well.
101 projects needing to be done, can't do them all, what to choose, what to let go for now?
server power supplies can be had cheaply 12 volts at anywhere between approximately 40 to 120 amps
Another relatively cheap source for high current power supplies are second hand server power supplies, it takes some legwork to find a reasonable source, but they can be really nice. I have one that can deliver 12V 53A with no problems at all... the hardest thing is doing some googling to figure out how to turn the supply on outside the server chassis, and to be honest it won't take you too long to find that info
awesome advice mate - cheers
This is fantastic! I tried get some rust out of my VW T25 fuel tank using electrolysis but it's a very large item and takes 60L of my electrolyte mix. I used a 12 volt 2amp power supply but that's not cutting it. I walked around the corner and found a discarded microwave on the street. Quick question: there are aluminium blocks between the primary and secondary coils. Do I put those blocks back in when I rewind the secondary coil?
Great info! Thanks
glad you liked it mate
a rectifier used in a car alternator would work too, ideal for high current low voltage
Riding mower engines as well and they are easy to get off
Fantastic video and a great explanation , , Question though Could you charge a car battery with that and how many watts does it put out , , roughly how long would it take ,also what would you use it to power out of interest and thanks in advance
As long as I dont dress myself in chain mail and stand in a pool of salty water. LOL! Your presenting skills are awesome mate. Just awesome!
lol - cheers mate lol
Nice project - the MOT will draw maybe 5A of magnetising current and over 100W of power even with no secondary load, so take care it might get hot, especially if you put it in a box. Its because 1 volt per turn is too much for a small area core like this, it is done to save money on manufacturing the ovens.
Watch all thrown out busted microwaves disappear. Ironically the one thing that can't really go wrong is the big transformer lump.Great video again.supurb
cheers mate
Wish I would have known this long ago, been using computer power supply's for years to power 12v & 5v goodies.
it's cheap and simple mate - it is for certain reusing a pc power supply gives you a much more stable and efficient supply - but sometimes that doesn't matter so much and cost and simplicity do - it all depends on what you want really
Much Respect 💪
cheers mate
Over here in the US we call that big gray wire 10 - 2 with a ground!
true enough mate - cheers
I’m going make a Brown’s gas go cart. Which will simultaneously grill a pop tart.
Never gets old
cheers mate
Just aquired a transformer for a spot welder project.Question. can I use carbon rods from a lantern battery as the weld probes if not what's best material? As ever great instruction videos.Thanks
If people do not have an MOT, or are nervous of messing with mains electricity, you could use a 12V car battery for the electrolysis experiment.
Make sure you include a suitable fuse in circuit :-)
Indeed - a diesel car battery is particularly good, ^oo^
nice one mate
It would be interesting to hook up an o'scope to that to see how clean of a 12VDC was generated...
Alternative , to find high current transformer ...
In computer ups .
In inverter.
Computer ATX ( as complete supply )
ATX supply will work great. Keep in mind if powering any circuit involving RF or high speed switching you'l need to put a filter on the output to protect the supply from back emf.
That's cool 👍 you could modify this to make a polystyrene cutter as well I would think!
for sure mate you wouldn't even need the rectifier
Can we see a proof of concept test with the Chain mail and pool of salty water please? Go on...you know you want to! :o) xx
lol - you are right - I am tempted lol
Full chain mail would be Faraday cage
Mw is very useful other then kitchen use . We can melt glass very pure way
for sure mate
i wanted to build a supply like that but for non-series confiurations (more amps, less voltage) but at that point the voltage drop from the rectifiers gets horendously inefficient (the beefy ones are usually also for high voltage, thus diodes in series). you should revisit this but make some kind of active rectifier circuit using mosfets or something. (for like 8 volt 200 amp molten salt electrolysis) for now i'll stick to chineese led power supplies.
Rob mate your wearing us out just watching you ! we could stick you on a wheel and power the world !! , I use 14V for electrolysers as we are after in car generation , design cells accordingly , . general electrical current protection regs are 1.5mm 16Amps , 2.5mm 20A ,4.0 & 6.0 mm 32A , 10mm 50A , 16mm 63A [ a household supply ].
The urea as electrolyte has certainly got me interested again ,and graph-oil. lots more plates for a 14V cell ,way more area , as you probably know excess volts is just waste heat . ,so some taps on low volts side of TX would be good refinement .
next thing to play with is ,I have been wanting to try the HHo run into a car catalytic converter ,, this is a simple way to test Andrea Rossi's lenr cold fusion claims , they get way hotter than can be explained . so mr worka holic , can we crack that one open too !.? .. MiZuno tecnology inc ,are claiming the record for heat efficiency with LENR . then all we need is a heat to power thermo-voltaic set up and voila !, bye bye big oil . Awesome work as always ,
Hho can only be generated uaing energy, that energy must come from coal and or oil even if it's not in your car.. Sure renewable energy can charge some cells but the storage device requires energy to be produced and so does the solar panela/wind mills.. There is really no true form of renewable energy.
Another good donor for a 12v ps is a old pc. They will usually have one good for a minimum of 20a.
This is great i run my battery drill with it
For anyone who would prefer avoiding the mains wiring side of this, might I suggest a 2nd hand server power supply as an alternative. As I type this, a HP 506822-101 750 watt, 12v 62.5a power supply would cost about £8.50 shipped from ebay - probably less than the cost of a decent rectifier bridge if bought new.
true enough - some people would rather recycle things though mate
@7:44
Robert: "This side... certainly don't be afraid of it. THIS side of it..." (points to mains)
Me: "Be afraid... be VERY afraid." 😝
Even though I work with it, I've never gotten over my fear of mains supply side and don't think I ever will. This harkens back to my theater days when I did stage lighting, where all the banging around the equipment went through ultimately meant that at SOME point, you WOULD experience a shock while handling equipment. And I eventually did, twice.
At this age, I'm perfectly OK with being afraid of it, but I do agree that you should never let the fear stop you. Courage isn't the absence of fear but action in spite of it.
I really don't think you need be afraid of anything mate - cautious, aware, sensible - for sure - afraid - never - I have been shocked too and I used to work on 10,000V lines while they were live
Good day Robert. love your vids, and don't miss any of them. Have a request. Can you please do a vid on using a Micro Oven Transformer for a House generator. Or perhaps tell me what else I need, apart from the Transformer, to do the Generator. Many Thanks. Wayne. Alberton. Johannesburg. South Africa.
I think you will find, a 1.2v battery has the potential to be lethal (cause cardiac arrest) if you bypass the resistance of your skin, which breaks down at different voltages allowing current to flow, this will also depend on the type of skin you have and where the current flows. Never touch battery terminals if you have cuts on your fingers, or if you are stupid enough to have fresh piercings on your fingers.
Great video. Have you done one on how you can use the magnetron you salvaged from the microwave?
Not yet!
If you want an alternative cheap 12v DC power supply check eBay for refurbished or 2nd hand HP server power supplies. They can handle from 35 Amps to over 100 Amps for between 8 - 20 GBP which might even cost less than one high current rectifier bridge if you have to buy one.
Oh apparently first comment too!
awesome mate - thanks for that
@@ThinkingandTinkeringYou need to short a couple jumpers to switch it on - info on YT shows how or hit me up if you need help!
Shield AND put a fuse or other overcurrent protection on that primary coil!
I need this!
awesome
Hi Robert, enjoying al of your fascinating video,s done in laymans terms, this will get peoples interest who wouldn,t otherwise bother, could you make an inverter to up the voltage out of Gods gift to experimenters the good old Microwave transformer, regards Doc Cox.
The real current limit is the amp rating of the mains circuit you connect the primary to.
The size of wire you used, in USA, would that be equal to 12 or 10 gauge wire ??? The way you described the wire seem to be what we call Romex. Used in house wiring. It has a bare copper ground and one wire coating in white and one coating in black and all 3 are jacketed in a plastic sheath. If this is what you used, did you leave the fiberglass inserts in the transformer core? And did you just loop the wire or did you bend 90 degree turns.?
The bridge rectifier will lose more than 2V and the secondary voltage will drop a little when heavily loaded, so I think the actual RMS output will be on the low side.
probably - adjust with turns
@Robert Murray-Smith I wonder if something like tis would work to recharge my battery bank for my solar system. It's a 12v system wit around 10 deep cycle batteries? I find that I need round 80 amps to have any kind of charge for the size of the bank we have. Do you think this would work?
LO,
MY RETIREMENT HOBBY IS WORKING WITH TRANSFORMERS, AND WASHING MACHINE MOTORS.
YOUR TEACHING method is top notch.
I NEED A LITTLE MORE DETAIL ON PARTS SO THAT I CAN PURCHASE PARTS SAFELY.
TO MAKE A BRIDGE RECTIFIER, I NEED TO KNOW, IS THERE A PARTICULAR DIODE AND WHAT DO I SOLDER THEM TO.
PLEASE HELP.
REGARDS
PETER.
What can I run from this power pack?.
Regards
PETER
Thank youuu
Sorry if this has been answered, but for these results, is 10awg wire about the same size? And about how many feet. Also looking for 12 volts. Thanks for the information, love these projects. Any recommendations for some cheap gloves with a bit of protection also. Thanks!
very enjoyable : )
cheers mate
If one is planning on integrating this 12v rectified dc power supply with the HHO generator, then I suggest including a PI (capacitor inductor capacitor) filter to smooth out the rectified pulsed DC.
Pulsed DC has a lower RMS voltage than than its peek voltage. While pulsed DC will work. It spends a significant fraction of a half cycle lower than the voltage needed for electrolysis. Then the voltage rises to the peek quickly bypassing the ideal voltage and each over voltage × amp draw = additional waste heat. Using a smoothing PI filter helps hold the voltage much more steady so you can produce hydrogen and oxygen at your ideal voltage much more of the time during each half cycle with less overvolting.
cheers mate
Thanks for addressing this. I was going to ask if this was somehow unnecessary for this application, but you've answered that, and explained why it's important.
Can you (or someone) please tell me what capacitors and inductor I should use for this project (types, values, ratings etc.), or perhaps how this is determined?
Thank you!
What if i put a powerful led light on it, one that can draw more amps, exceeding the bridge rectifiers amperage. Would the bridge rectifier burn out? Or would it hold strong at the bridge rectifiers amperage limit? Also, you say be careful with ac. So if i touch the secondary coil while the primary coil is plugged into 120v ac. Im dead right? I can never wrap my mind around what shocks me and what protects me. Or how to entirely be protected while also touching it or... idk. I wish i understood it.
Nice. Also, would it make sense to get some seriously rated connectors that go to the rectifier? If someone is going to be pulling 40-60 AMP's are 12vac, any chance they would heat up enough to melt a straight soldered connection? Pro-tip- lots of people will smash flat some copper pipe to use as lug/connectors on battery banks.
nice one. mate - me too by the way
Loving the English approach rather than the ott American channels. Newcastle upon Tyne here
lol - we are more reserved lol
Robert Murray-Smith not sure about reserved more a genuine person and not some fake wannabe
Could you start a car with this like a jump starter if you had thicker wires from it?
I know people have been calling you a massive resistance, but don't let it get to you! You're better than that!
;'))
lol - nice one mate lol
Thoughts on why I worried about it, Father was changing a battery on a truck and he got stuck to it for a moment. Now that I see you touching them, well he must have been holding a hotline that something was pulling from. Thanks for the un-fusion!
for certain he was mate - what quite often happens is the terminals get bridge by the spanner folks are using to disconnect the lugs - that's why a lot of spanners for this job come with an isolated grip - it just prevents jumping the terminals with a lump of conductor
sir apart from using the microwave transformer can i use other transformer for like automatic voltage regulator transformer( stabilizer)?
for high current dc.. look into server power supplies some of them output 50+A on the 12v rails
cheers mate
You didn't say or show but, what did you take out, the primary or secondary wire to replace it with your own? It looks like you took out the secondary?