| Author | Views | Views Today | Rank | Comments |
| 120,074 | 7 |   |
58 |
| Author | Views | Views Today | Rank | Comments |
| 120,074 | 7 | |
58 |
| Since my page was first posted, I have received a number of emails asking about a high current power supply. I looked around, but couldn't find one that was suitable. So, I designed this. It is a linear supply, which might have a few of you rolling your eyes, but it takes very few parts, is simple to build and can supply huge currents. |
Schematic |
Parts |
|
Notes |
Related Circuits |
Comments |
| Add A Comment |
| Looks like a low cost easily built cicuit BUt it's design concept is for a fixed output. I would very much like to see a variable 5A (or greater) in the range say 2 to 48V . I am unable to "modify" your circuit to achieve this with a pot which anyway would involve switching to different resistance sub circuits - I thnk!! The best type of variable is the infinitely variable which requires generally a digital voltmeter to be incorporated & this adds COST unless you have a low cost design for a digi-voltmeter??? | ||
| Thank you for your circuit! | ||
| Hi. Very interesting reading. My problem is that I have built an 8 channel microphone unit and need a 48 volt power supply - each mic needing around 4ma. Any ideas ?? | ||
| Your circuit is simple and good. Series voltage regulation has a high ripple and poor regulation compare to one which are using a 7812 regulator. I want to make a power supply that is capable to higher currents. But 7812 has a maximum current of about 1.5A, how can i incorporate this with your circuit? Please send me your comment and please include the circuit so that i can fully understand your circuit. I know that making a complex circuit could make me understand well. Thank you. Efren, | ||
| ROFLMAO @ Captain electrode! Yeah man, you can TOTALLY build a 16kw power supply for $40. For god's sake, if you have so little knowledge about electricity and electronics to even ask that question you should NOT be anywhere near high voltage or high current, you are a danger to yourself and others! PLEASE PLEASE PLEASE read a book or two about basic electric theory or EM physics so you don't hurt yourself OR SOMEONE ELSE! Or cause a citywide blackout, for that matter! Good luck man! | ||
| If you correct at Note 2, from 150W to 150mW, everything is going to be O.K. | ||
| I am gong to ask the impossible. I have 12 vdc car battery. I am using this source as my power supply for my tests. I need high voltage AND high current. so how can I get lets say 200 or 400 volts and up to 40 amps. Is this possible and the next impossible question, can I build these things for around 40 dollars. Please dont laugh but I have been building and experimenting trying to do this for the past 3 months. Any help would be really appreciated. | ||
| Hello im needing help with making a ps, or finding one. Im thinking of using a computer power supply, which its already rigged. but im wanting to put 100 watts over a coil with alot of amps. I was thinking of 20A at 5 V constant. Any ideas on a cheap way to build or buy this? " im needing it to be stable, constant, and reliable " | ||
| Hey, thanks for this circuit. I just re-built a power supply that was very similar. Up to this point, I did not understand how regulators worked, and I usually tried to go with regulator ICs such as the 7812, etc. I studied your schematic, and looked on wikipedia too, and now I think I get it. Thanks! Links I found useful: http://en.wikipedia.org/wiki/Voltage_stabilizer http://en.wikipedia.org/wiki/Linear_regulator | ||
| i was wondering if someone has made this and it works. In electronics class we always placed the npn emitter on the negative, but this was in switching circuits. | ||
| it is better to use darlington transistor ,u can add d313 transistor to 2n3055 and make it darlington.i am sure,i use it until 6 amps, but with 2 of 2n3055. | ||
| Like previous have said, the bottlenecks are your transformer, the transistor, and the diode bridge. There are better ways of getting high-amperage output. | ||
| Hello. I am trying to build a high current 8V, 6A for my project. I have transformer 220V IN, 12V, 5A out is it OK for above rated voltage required. I need circuit diagram for it. Tray to be easy to build with ordinary component. thanks | ||
| I am trying to design and build a 24VDC regulated power supply hat can deliver at least 50A and also has a 15V regulated output that only needs to deliver 100mA. Can you help me? | ||
| I need a schematic to build a power supply for a surround sound system that would handel a 400watt amp. please email me Thanks! | ||
| Hello, I am trying to build a12v baterry charger with current of atleast 10amps. Is this possible with help of ICs (LMXXX or any other) Please mail its sollution on my email id ie - | ||
| You have to use a device called dahono current doubler. I assure you it will gi ve twice current ratings than usual | ||
| Hi, we are going to make a 24 VDC regulated power supply as our project.We would like to ask help from you to provide us schematic diagram for this circuit.Thank you and God Bless. | ||
| Hello There. I am trying to build a high current psu 12v-30A. I am building n surround sound system using two 4-channel car amps. I want to know know if you could please e-mail me back. I need a circuit diagram please, 220vac to 12v/30A without using a transformer. thanks | ||
| actually Ose, the 2N3055 is rated for I believe 15 Amps which is the only component given limiting the power output as long as the correct choice is made for the Bridge and the Transformer. Although buying the capacitors for a reasonable ripple along with the bridge and the transformer rated for those amps may be cost prohibative. | ||
| This power supply is NOT HIGH CURRENT. It is only 500mA maximum, hi de osa | ||
| if any one can give any input i need to build a 200 amp 18 vdc unregulated power supply any input would be great. | ||
| I asked this on another power supply page and you that particular one wouldn't work. Would this one work? What would be the values for a 13.8vdc 20A power supply--for a Ham Radio? | ||
| sir could u kindly explain nto me the operation of the HIGH CURRENT POWER SUPPKY please | ||
| Sir,i just asking how to make the high current split power supply for amplifier with output +/-25vdc | ||
| Sir, can you recommand for me the better power supply by using my amplifier with ic lm1875 or lm1876?i want the power one.....thank you. | ||
| Hello, if possible can you either email me or post online, the schematics for building a multipower supply. I'm trying to build a 10 channel 12vdc power supply, for cctv. So basically i'm trying to plug in 120vac and get out (10) individual 12vdc power. Thank you for your time. | ||
| Can this be used for any domestic use like running a water pump? | ||
| I have to make 24VDC high current power supply ? Can you help me ... Input voltage : 200vac-22vac Output current : 24VDC 10A | ||
| SIr, I just would like to ask what are the possible voltage output of your design? | ||
| Why you have so many caps? I don't understand the purpose of C2. And I don't understand C4 and C5. Are they there to act as low pass filters (with the series resistance of the traces)? | ||
| Sir could you plese explain to me how its functioning and please send to me the shortly descripiton of it | ||
| i want know how to make a stepup &step down tranformer | ||
| I am using a well designed 117V AC to 24V DC power supply.This uses components like RFH 25 P10 (P channel 100v 25A mosfet),BYT 30 (free wheeling diode) and UC 1524A (PWM).It difficult to have these components in India.Hence want an alternative circuit using n channel mosfets which are readily available here. | ||
| hi.can u assist me with a circuit that can switch off a refrigerator unit if the voltage is below 200v and above 240v and also be able to delay any in coming voltage for about 10 minute | ||
| i just want to do a simple power supply with 12VDC output with 3A transformer... can you help me do one???????? | ||
| Beware how much current you actually try to draw from this "high current" design. With a 15v transformer and a 10 volt output (5 volts difference, as you suggest, which is right by the way), if you draw 10 amps, that 2n3055 transistor will have to dissipate at least 50 watts. While they are rated for 115w (not 150, by the way), that is a very optimistic rating assuming ideal heat sinking, which you will never have, even with a big aluminum heat sink and a fan blowing on it. Try to design these things such that they don't push a 2n3055 beyong 25 watts dissipation or there will be trouble. If you need more than 5 amps from this thing, I'd strongly suggest putting multiple 2n3055 in the output, and including bias resistors to balance them (otherwise, one will surely conduct before the others and blow itself up.) | ||
| Why so many caps? I don't understand the purpose of C2. And I don't understand C4 and C5. Are they there to act as low pass filters (with the series resistance of the traces)? | ||
| This powersupply is not very efficient. Also, watch out for heat generated by the unit. Visit Myspace.com and look for Reuben Gathright. I am building a high amperage 12VDC switching powersupply for use in Electric vehicles. | ||
| I have a 12 to 15 volt @ 25 amp power supply. I need occasionally to run a high powered transmitter that will sometimes pull as much as 45 amps. Can I use the output of the power supply in parallel with a deep cycle 12 volt battery to safely solve my problem? | ||
| it is great | ||
| I want high current producing circuit which is about 300amps with just a single phase supply | ||
| i am student in thailand i am studying with high current source i want supply about 200 amp . can i have circuit diagrame or knowhow or information to study, plz recommend | ||
| What is the amperage requiement of the transformer in this circuit. | ||
| I want high current producing circuit which is about 300amps with just a single phase supply | ||
| Hi there, just wondering can a microwave capacitor be used like a car amp stiffening capacitor for a in house computer power supply (trying to) run a car amp (Editor's notes: No!) |
||
| We need 230 v DC to 230 v AC inverters, do you have or perhaps re-direct us. Thank you in advance | ||
| Can you please send me details to make this power supply in to variable power supply output. I will be very much thankful. | ||
| How much is the Current? and how to calculate it? Thanks. | ||
| can you send me on my email what kind of circuit should i used to my motor bike to regulate the output voltage from the coil into 12V. | ||
| thank you ... this circuit is simple but thank you again i know your road now/ your friend naguib | ||
| PLEASE IF IT IS POSSIBLE I WANT A CIRCUIT THAT GIVE A 220VAC WITH 8 OR 10AMP FROM A CAR BATTERY. (Editor's notes: There's an inverter schematic on this website.) |
||
| I want many circuit diagram of high volt, and fany circuit. plz sand me. | ||
| hello audio guru,i like to know how much current i can get from this circuit at 12v supply. | ||
| Is there anyone here who can help me. The current is 150A to 180A with nominal voltage of 3V. | ||
| can i get hight curent and hight voltage thanks | ||
| I want a power supply circuit of the input of 230vdc and out put in two forms that is 12vdc 500mA and 18vdc 1A using voltage regulator
help me out please (Editor's notes: See the multiple power supply circuits on the circuits page (link at bottom saying "Back To Circuits Page").) |
||
| send me more information about data transmission through power lines (UG project) & circuit diagram ,explanation. | ||
| All comments are being shown. Show Only Last 10 Comments. | Add A Comment |