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26th February 2006, 06:24 PM
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diyAudio Member
Join Date: Nov 2003
Location: Split
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chipamp PSU problem, need help
Hi there, I already asked question on ChipAmps forum , but nobody seems to know how to solve problem...
Just finished, PA100, chipamp and snuberized regulated PSU. Testing one chanel (board) everything is beautiful, rail voltage is steady +/-27V, dc-offset 15mV, testing other the same thing... Absolutely beautiful... Now the funny part, when I connected both channels(boards) to a PSU I got massive voltage drop and negative LM388 got too hot to touch... I used a single power tranny (separate windings), a single PSU, two rectifiers (ready made, rated 7A) LM388 regulators... So, every board works perfectly, but when they are both in system sh.. hits the fan... Alexw amp. http://shine7.com/audio/pa100.htm Regulated psu , nuuk's pages http://myweb.tiscali.co.uk/nuukspot...gainclone6.html
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