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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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|I have bought up most of the components to build my power supple. Was wondering if you could tell me how to build my Bridge Rectifier and how to add a variable to my 70A 17V power supply. I have the transformer and caps. I think I need a 100A 100V Bridge Rectifier but finding one like that has proved to be very hard! Please if you can tell me anything about how to build what I need or let me know what mite work I would be very greatful! Also any info that may help like a scumadic etc would help a lot. Thanks Bill|
|I need a power supply schematic to build a 13.8vdc 20amp power supply. I was wonder if this one on this page would work for that or would I need to change compoint sizes. Thanks Jeff|
|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,|
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