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TRoubLeD 28th August 2011 11:15 PM

400W Mosfet Amp Problem
Hi friends
I made Anthony E.Holton's 400W mos amp but p channel mos ıs overheating in 10 seconds
I can hear very few volume from output.I used a pair of mosfet for the test .Supply voltage is +-45VDC.
What is the problem ,sorry for my english

nigelwright7557 28th August 2011 11:49 PM

Have you set the bias correctly ?

TRoubLeD 29th August 2011 12:30 AM

When i set bias current ; i saw 60mA for n channel but p channel's current was 1A(with a pair mos)

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