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|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.|
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|Hello, I wonder how to get high current with this configuration? Lets take the highest hfe for this transistor, 70. With 12Dc and a resistor of 680Ohm result a current from 17mA x hfe 70 = 1,235 Amps??|
|he requests for specific "I need to do this" stuff leads me to this conclusion: Put the soldering iron down and step away and nobody gets hurt|
|i want to make a 12 volt 40 ampere power supply for a very urgent project. please send me any info regarding that|
|I have components for electrifying my bike. Is it feasable to use this PS, substitute a 12v 15A motor for the transformer and get my power for the motor and battery buffer? What other suggestions do you have?|
|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.|
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