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RE: Can LL9202ampp be ordered with a cathode feedback winding?

Posted by amnesiac (A) on March 7, 2019 at 04:12:49

In Reply to: RE: Can LL9202ampp be ordered with a cathode feedback winding? posted by KevinC on March 5, 2019 at 18:58:16:

Kevin I sent him an email which he answered personally he also included a sheet on the ll1620 5% If I remember right which is not listed normally only the 25% But Iam not sure I understand it right but I think he said the primary is split not the secondary. I thought it would be the secondary so the feedback is across the output and not just the valve. I can easily apply plate to grid fb to reduce the plate resistance. I see the problem with the ll9202 is the capacitance killing the hi frequency especially with hi plate resistance tubes like 75tl and I read about the guy on aa that was having much trouble getting a se one with the secondary grounded to do enough hiend.I Am sure its going to be an issue with any 20k trans. Anyway Mr L said not currently is he going to design one.

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