I was wondering if I can covert a transformer that is 220v to 110 and change it to a step up? It would be for a 500w motor. Thanks
Topic by senorkevin | last reply
Hey guys this is rush... i want to make a high voltage power supply made from a charger and a trans former this is how i'm planing i will connect the output of the charger to the real output (where the plug is connected ) of the transformer and connecting the real input (where it originally lowers the voltage) meaning to say output(ch)--->input(trn) the output of the project is the real input of the transformer guys pls. help me as fast as you can tnx - ~_~
Topic by crazy lazy man | last reply
I'm building a power supply for a cnc router powersupply. The output has to be 36 volts at 12 amps. I'm going to use 6 of the 25.2 volts, 2 amps transformers at radioshack (I have a coupon). When I rectify it it should be about 36 volts. Couple questions about transformers 1) don't transformers essentially short out an AC socket? I don't wwant to start a fire. 2) how can I have a LED indicator that indicates that each transformer is working? I don't want to use a huge resistor, because that seams inefficient. 3) how big of a filter capacitor do I need? I have a 33000uF capacitor, think it's a bit overboard? I know I need at least 4800 uF for just stuff like motors, but the only capacitors I have that works above 50volts is that capacitor. 4) can you connect AC in parralel? Can someone draw be a diagram?
Topic by guyfrom7up | last reply
Hello everybody! I just need some help with an electronic project I was doing-I need to desolder a transformer from a camera flash circuit, but every time I try with a new circuit, it always melts or the component leads fall off. I have included some pictures of it, maybe someone could identify the kind so I could buy it at an electronic retailer? It is meant to have 5 leads, with 3 on one side and 2 on the other. On a technical reference it has 7:3 coil ratio. Any help would be greatly appreciated. Thanks!
Topic by NightRider7 | last reply
Hi There! I have here a transformer from an old UPS (Belkin 550VA), I just wondering if I can use it as a battery charger, my problem is I cannot locate the PCB connected to it. Available information I have here are in one side there are 3 wires Blue, Brown & Red on the other side Black, Red, Brown, yellow, Blue. It is also labeled on the top 080-48172-00 GP 0751 Class B Viking B-2 E210832 Can someone help me with this little project? Thanks in advance! Jayce
Topic by jayce_sos | last reply
I have salvaged a old microwave transformer that i am going to use for a SLA battery charger i am building. I have rewound the secondary with 50amp wire and i get an AC output of 12v what is what i want but im confused with working out how many amps it puts out. I have run it through a bridge rectifier and a capacitor and i get about 18V DC. I was testing the amps by adding 12v 50watt light bulbs to it 1 at a time and when i get to 200watts the voltage starts to drop to about 10v DC. My question is does that mean the transformer is being overloaded? and if so is there a way to increase the amp output by winding secondary with different wire? I have seen online videos of Microwave transformers being rewound and they give out 50amps at 12v.
Topic by JamieG14 | last reply
I took a part an ooooold boombox and got some cool parts from it, one of them being a heavy, good-sized transformer. The boombox was using the transformer to step down the voltage before rectifying it.(Right before rectification it goes through a 500mA fuse if that helps...) From what I can tell, the mains power is connected directly to the transformer. I tested it with low voltage AC source and found that it is roughly a 10:1 ratio transformer. I wanted to reverse this and use it as a step-up transformer, but I don't feel comfortable hooking it up directly to mains in case it draws too much current and flips a breaker or something (I read a biography of this one dude and when he was a kid he tried to make an electromagnet using mains power.... knocked out the power on the whole block and the police came...). Will it draw too much current putting it on the low voltage side? I saw one guy say that using a 50 ft extension cord will prevent it from drawing too much. Will that work? If not any other ways? (or just not worry about it?) edit: It is roughly the same size as this one https://www.instructables.com/id/LM3886-ChipAmp/
Question by 7654321 | last reply
2 questions about transformers: - If a certain transformer (let's say, for a power amplifier) is needed, and for example, a microwave transformer is available, can the steel frame be cut to take out the secondary coil, to be replaced by a new one, and subsequently be re-attached (by clamps or so)? Would it need some treatment, like putting varnish, or oil over it? Would this cutting and re- attaching cause a loss in efficiency, or cause heat build-up? Would it cause more noise in the output? - Some amps have a toroid transformer. Is this just fashionable or is it for a reason? Some industrial amps use sheets of copper instead of wire. Why is this better for industrial, why, and if not for common stuff...?
Question by BobS | last reply
I hope someone here can help. I have a AC to AC step down Unrectified transformer, i.e., no circuit board whatsoever. Primary winding has continuity, secondary wire has continuity. No continuity between primary and secondary wires in any way. In short, power goes in, but no voltage comes out. If someone that knows precisely how transformers work can explain to me how a magnetic field can be generated but no electricity generated on the 2ndary wire I would appreciate it.
Topic by PeterE56 | last reply
Hi, Moved over to the UK from the US a couple of months ago and my fiancee has brought with her a 110V tea-steeper with her. Apparently it possesses magical properties that cannot be reproduced by other local appliances. It will blow out the fuse in a 500-watt transformer, which is the largest that I have. My question is, why are these things so expensive? I have very limited knowledge about them, but from what I do know they don't seem that complex. Some of the higher wattage transformers are the same price as a netbook computer! What is in them that costs so much? Also, can you make your own? Thanks -Andrew
Topic by knightop | last reply
Designing a transformer, currently i have a 250mm by 250mm window for wire and interchangeable coils, some only a few turns, but will leakage flux cause large power loss?, or will it just limmit current, i read some stuff and im not really sure, i mean i don't want to start building it if it won't work
Question by pwnag3 | last reply
Hi, I want to plug this transformer I have into the wall to be able to use its output to power several of my other projects. I need a way to limit the current from the mains power supply into the transformer, it has to be limited to about 1/2 an amp. I really don't want to lose any voltage though, and when I use a resistor to limit the current it sucks down all the voltage and overheats. I really need some help with this. Thanks
Question by transistorguy | last reply
Ever since seeing the Transformers movie I just couldn't stop thinking about transformers. So I decided a Transformer costume was it this year. It started out as just a box and later became more elaborate and more of a car. IT IS FINALLY DONE. Took three months but it's done. Pictures of the final product is here. Today I took it to school for a contest. I probably transformed at least twenty times. At one point the tape wasn't working on the spoiler because the "haters" would tear it off. So we used a bolt instead. In the contest people were chanting my name and I won ... a cheapy blue necklace. But now whenever I was going around the block all I would hear is "Are you the Transformer kid? Transform for us". Of course I would. So if anyone has questions or wants me to post instructions let me know. The instructions will be hard because of the variety of height and weight.
Topic by alecgates15 | last reply
Hey guys I need some help from the experts. I am building the microwave transformer ark welder instructable. I have acquired my microwave transformer, and rewound the secondarys. Now here's where it get interesting. I stay in South Africa, and we have 220v, 15amps coming out of the wall. So I figured with so much wall power I probably only need one transformer, cos I already have too many amps (on paper). So from what I understand, I will be putting 3300watts(220v*15Amps) into this transformer. Another interesting detail is that I think my transformer has 200 turns! I put 16 turns on the secondary (although there is space for more, I just don't have a piece of wire long enough). Which means that my out put voltage will be 17.6v, and 187Amps! Ahhhhhh!!!! If I wind a few more turns on the secondary, I could probably squeeze 25 on there, that will bring my output voltage to 27.5v and 120 amps. Which seems like quite a lot? So here's my question: Will this work? If not, and things go bad, what will happen? Is there any chance that the primary coils will melt, or is it only the secondarys that will do that? I don't really want to destroy my transformer, because they are really hard to get here. South Africans won't give you snow in winter. I had to buy a broken microwave! One idea I had: I have a single coil wrapped around a plate iron core, it looks just like a transformer but with only one set of windings. The thing is as big as the microwave transformer, its wire is of a slightly thicker gauge, and it probably has about 600 turns on it (it belonged to a florescent light setup). I thought I could connect this up to the secondary winding, maybe it will bring the amps down, and also serve as an inductor/ark stabilizer. But I'm just guessing, I'm a complete noob to electronics!?
Question by lenny25 | last reply
I'm new to this website and ive seen a lot of great posts for some transforming knex especially one that resembles optimus prime (not the large one that the creator refuses to post a smaller one) i was just wondering if anyone would be willing to post more instructables of their designs keep up the work folks.
Topic by alabasterinstruct
Dear all I would like to use a (temperature Controlled Switch Thermostat Auto Reset ) for protect my transformer (120ac to (60vac 2amp) .Could you point me how much the heat degree( C) of thermistor I must to use please Thank you so much
Question by lam | last reply
I have been thinking about this for a long time now and in therory it works. What im wordering is if you could make it work in place of the traditional power outlet. Here it is, basicly there are just coils of wire inside of a transformer, on coil has say 240 turns of coil. Inside of this coil is another coil with 240 turns also. So the voltige inside the first coil will be the same as the second coil. And to half the voltige in the first coil. If you had a plug that was just a cilender with a coil of wire inside and an outlet that was a hole in the wall with a coil inside. I know a hole in the wall with 120 volts running through it sounds scary , but put a plastic cylinder inside the hole and vurtaly no shock hazerd. sorry for the spelling errors spell check was not working.
Topic by Laserman595 | last reply
This is the most useless piece of wasted technology ever; the "men's groomer" "as seen on tv" !!!!!! I've bought two of these, planning to build from them something more useful, that is a circular etcher / drill and a sort of sliding saw, to etch / smooth / saw materials like hardened paperclay, glass, balsa wood and terracotta; but surely I've presumed to be smarter than I'm in electronics..... So I'm stuck with these two pieces of useless stuff in hand; do you know how to get an etcher and a saw from these? I'm sure there're many smart guys here. This may be one of the smartest instructables ever.
Topic by filt3r | last reply
I have a project for college... The assignment is to make an edible or non edible sandwich. I've chosen to make the non edible and I think I'm gonna call it "My Robot`s Hungry" The materials I'm thinking of using are.... *Rubber *Speaker wire *Masking tape *Duck tape *Sand paper *Metal sheets *Wood I have to make it neat because I`m a bit of a perfectionist in general when it comes to these things...Design and wot nots ^^, I have some wood glue and my Dad who is fairly handy.. Anybody that can blast out an idea...any kind...Blast away... it will be a bit of fun and interesting to read... Whoop whoop whoop Tralena
Topic by Cheena Tralena | last reply
I need to convert 240V Ac mains supply to 12V DC/ 24 V dc How to do? one way is transforming 220 V ac to 12/24 V ac using transformer and then using diode bridge and capacitor to convert it to dc but i dont know how to use a transformer, how to implement it in a circuit......?
Question by chatsbk007 | last reply
i want to combine two of 10 ampere Trafo, so i can have 20 Ampere power supply i read a few article that say if we connect the sekunder(secondary) of identical Transformer in pararel, we can have a double time current flow on this connection. do anybody have try this before?
Question by beatobe | last reply
I found a flybacktransformer and I would like to sale it. its is nice and heavy built and would have a better duty cycle than one of the newer ones. I would like to get $12 for it. finding a flyback like this one is not always too easy. I added a mug to show the size of it.
Topic by inductionheat! | last reply
I got this out of a wall-wart and am trying to add it to my stun baton to make a bigger arc, can anyone tell me the full info on how to use it as an arc generator using a 2000 volt input? PS im doing this safely and DO NOT USE THIS ON LIVING THINGS JUST AN EXPERIMENT!!!!
Question by Myers Technology | last reply