In Reply to: Re: Two stage differential amp ?? on NFB posted by pipo on March 3, 2007 at 11:22:49:
Hi Pipo,My amp uses ideas from this forum and around the web so I don't have anything new. The CCS's are a cascode pair of DN2540's set for somewhere around 85-90mA for the output pair. I used one of Gary Pimm's battery biased CCS designs for the 6BL7 differential input stage. I did use a small/medium sized heatsink on the output CCS and I haven't had any trouble for nearly 2 years so far.
Send me an email and I can send you some schematics.
Regards,
John
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- Re: Two stage differential amp ?? on NFB - nerdorama 14:01:20 03/03/07 (0)