| Author | Views | Views Today | Rank | Comments |
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56 |
| Author | Views | Views Today | Rank | Comments |
| 104,819 | 8 | |
56 |
| 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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| 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. | ||
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