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10th February 2011, 04:00 PM
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#1 |
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diyAudio Member
Join Date: Jul 2005
Location: milan
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CFP input for JLH amplifier
as you know is always more difficult to get new ideas
with a copule of FET (K170 and J74) it's possible have high input impedence 
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13th February 2011, 12:53 AM
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#2 |
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diyAudio Member
Join Date: Nov 2007
Location: Dallas
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If JLH output stage was intended as a unity follower,
Q5 perhaps should have been TIP32C PNP? I also don't see any purpose for R6. As you have it drawn NPN, base Q5 would be -23.7V Q7 will be fully saturated, and the output short to the negative rail. Last edited by kenpeter; 13th February 2011 at 01:09 AM. |
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