Old Stuff
Hi JoeBob, I have some old Yamaha tutorial stuff at work that speaks of a variable Ro Control setup.
I think it relied on a power amp output earth return series sense resistor and and op amp to modify NFB to give a derived apparent variable output impedence - even negative output impedence I think ?.
I'll do a re-read of the article and report a summary back to you.
I'll re-read the RE stuff too.
Regards Eric.
Hi JoeBob, I have some old Yamaha tutorial stuff at work that speaks of a variable Ro Control setup.
I think it relied on a power amp output earth return series sense resistor and and op amp to modify NFB to give a derived apparent variable output impedence - even negative output impedence I think ?.
I'll do a re-read of the article and report a summary back to you.
I'll re-read the RE stuff too.
Regards Eric.
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