RE: conjunctive filtering

SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

Posted by Paul Joppa (P) on August 1, 2016 at 13:02:38

In Reply to: RE: conjunctive filtering posted by dcal40@aol.com on August 1, 2016 at 10:58:40:

I think that circuit would be sensitive to the specific output transformer, and probably to the speaker as well.

It looks to me like it is there to assure stability in the presence of feedback. With beam tetrode or pentode, the plate impedance is very high, so the voltage gain increases at high frequencies due to the transformer's leakage inductance and/or the inductive component of the speaker impedance

Normally if the tube is triode-wired the plate impedance is low so this is not a bad problem. Also most SET designs have no feedback.

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Follow Ups Full Thread

Topic - conjunctive filtering - dcal40@aol.com 12:21:45 07/30/16 (12)

This is why test equipment such as a scope and signal generator - Michael Samra 02:57:46 08/05/16 (1)

RE: This is why test equipment such as a scope and signal generator - Hornlover 08:50:49 08/05/16 (0)

There's an online calculator for everything - kyle 08:18:42 08/03/16 (1)

RE: There's an online calculator for everything - Lenin 08:03:43 08/04/16 (0)

RE: conjunctive filtering - Frihed89 00:22:10 08/01/16 (7)

RE: conjunctive filtering - dcal40@aol.com 10:58:40 08/01/16 (6)

Common for guitar amps. - Chip647 05:26:36 08/03/16 (1)

RE: Common for guitar amps. - Michael Samra 01:52:24 08/05/16 (0)

RE: conjunctive filtering - Lenin 00:48:02 08/02/16 (0)

RE: conjunctive filtering - Paul Joppa 13:02:38 08/01/16 (2)

RE: conjunctive filtering - dcal40@aol.com 16:08:16 08/01/16 (1)

taming "ragged frequency response" - Frihed89 00:01:54 08/02/16 (0)

Follow Ups

RE: conjunctive filtering - Paul Joppa 13:02:38 08/01/16 (2)

RE: conjunctive filtering - dcal40@aol.com 16:08:16 08/01/16 (1)

taming "ragged frequency response" - Frihed89 00:01:54 08/02/16 (0)

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