In Reply to: Speaking of S-5000s.... (bias and current measurement) picture posted by PeterI on April 19, 2014 at 10:30:41:
Pete
You did a very nice job and I like your bias supply.I usually keep it at minus 16.5 to minis 18v..Minus 15 is way too low for this amp and the 7189s would be on fire.. Vg2 is higher due to the ultra linear transformer where as wired in pentode, Vg2 would be lowered to about 300v.
Leave it where you have it..This amp will produce about 22wpc with 7189s.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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- RE: Speaking of S-5000s.... (bias and current measurement) picture - Michael Samra 13:35:52 04/19/14 (0)