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Power Supplies :
Reconn's World Forum
Power supply 12V 20A
Posted by:
reber ()
Date: January 20, 2004 08:48AM This is the schematics of the power suply I made ... Pictures are located on my home page. [www.reber.si] Attachments: post-13-06488-usmernik_12V_20A_01_sch.pdf (175 KB) Re: Power supply 12V 20A
Posted by:
MP ()
Date: January 26, 2004 12:19PM Just curious. I do not see any protection diodes on your supply. Will these power transistors be ok if you short circuit this supply? MP Re: Power supply 12V 20A
Posted by:
reber ()
Date: January 26, 2004 03:19PM For short circuit protection on output, you don't need any protection diodes. This power supply is tested for short circuit, the output current is approx 23A, if transistor Q6 is hot or very hot, the output current is lower. maximum output current is aprox 26A. I use this power supply for testing car power amplifiers. Re: Power supply 12V 20A
Posted by:
Azrin ()
Date: February 25, 2004 06:40AM How can I add current control to this circuit? So that I can vary the max current to the load Re: Power supply 12V 20A
Posted by:
reber ()
Date: March 13, 2004 08:09AM You can't add variable current control. Max current is defined by resistors R1-R5. By changing the resistors value you may define another max current. Be careful about setting the max current value. Re: Power supply 12V 20A
Posted by:
tor bo428 ()
Date: April 20, 2004 10:30PM how many amps will this circuit design take? can I just add more transistors to get more current? I have a transformer capable of delivering 180 amps continous @16 volts. 90 amps @32 volts.  Re: Power supply 12V 20A
Posted by:
sharkair ()
Date: July 07, 2004 05:34AM can you do us a favor? why not u (reber) post here the calculation or design consideration during designing stage of that power supply. I'm very interested how you come out with this circuitry. Thank you  Re: Power supply 12V 20A
Posted by:
Ray ()
Date: September 11, 2005 02:13AM No pc board layout??
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