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Favourite low offset op-amp
May 17, 2005
63 Replies
Hello Sampei,
If you can't find much on the web there are still several options:
a. Obtain a really old ARRL Handbook, at least 30 years old. Lots of tube amp schematics in those.
b. Look at the schematics of the Drake TR-4 ham radio transceiver. It used to be very widespread in the 70's and used a 6AQ5 for the receiver audio.
c. I believe the Gibson Skylark tube guitar amps also used it.
d. If you find a large public library somewhere that doesn't throw out older books they might have something, too. Probably only in big cities.
Regards, Joerg
formatting link
Right.
John
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