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8th April 2010, 05:55 PM
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diyAudio Member
Join Date: Sep 2002
Location: north of Italy
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Holton N-channel amplifier problem
Hello,
i have constructed the N.channel mosfet amplifier 4 years ago. it has functoned very well since yesterday when I had the briliant idea of rebias the current. unfortunatly i have rebiased wrong one channel with the trimmer because the tester alligator was attached bad. ( so I had a wrong reading on the tester). After some second at high bias current,the fuse (2 AMPERE for rail) blow. I have restored the fuse and unscrew the trimer but every time the amp blow the fuse in a second. In your opinion what is probably broken? Regards D.N. P.S. you can find the amplifier schematic here: Replacement transistors/mosFETs for holton n-channel amp Last edited by m60gpmg; 8th April 2010 at 05:57 PM. |
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