RE: Interstage transformer to 600R recommendation needed

Posted by Joshua_G (A) on December 6, 2013 at 13:56:58

In Reply to: RE: Interstage transformer to 600R recommendation needed posted by KevinC on December 6, 2013 at 12:56:01:

Hi Kevin,
Thank you.
I’m considering options aloud…
With E55L in triode mode have mu of 50, thus 4:1 turns ratio seems a reasonable option to tame the gain of that stage, since even 22dB gain for a preamp is on the high side.

The plate impedance of the E55L in triode mode is 600R. My power amp input impedance is 20K. The reflected impedance as load to the tube will be 320K. Is there no problem with it?

What will be the primary inductance of the LL1671/60mA?
Can its’ low frequency roll off be estimated under the conditions I described (tube’s ri 600R, load 20k)?

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Follow Ups Full Thread

Topic - Interstage transformer to 600R recommendation needed - Joshua_G 12:59:51 12/05/13 (14)

RE: Interstage transformer to 600R recommendation needed - KevinC 12:44:24 12/06/13 (8)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 13:37:02 12/06/13 (7)

RE: Interstage transformer to 600R recommendation needed - KevinC 15:44:11 12/06/13 (6)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 10:35:47 12/07/13 (3)

RE: Interstage transformer to 600R recommendation needed - KevinC 16:51:06 12/08/13 (2)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 04:11:49 12/09/13 (1)

RE: Interstage transformer to 600R recommendation needed - KevinC 04:26:48 12/09/13 (0)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 16:34:45 12/06/13 (1)

RE: Interstage transformer to 600R recommendation needed - KevinC 05:45:43 12/07/13 (0)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 14:57:50 12/05/13 (4)

RE: Interstage transformer to 600R recommendation needed - KevinC 12:56:01 12/06/13 (3)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 13:56:58 12/06/13 (2)

RE: Interstage transformer to 600R recommendation needed - KevinC 15:56:10 12/06/13 (1)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 16:36:22 12/06/13 (0)

Follow Ups

RE: Interstage transformer to 600R recommendation needed - Joshua_G 13:56:58 12/06/13 (2)

RE: Interstage transformer to 600R recommendation needed - KevinC 15:56:10 12/06/13 (1)

RE: Interstage transformer to 600R recommendation needed - Joshua_G 16:36:22 12/06/13 (0)

RE: Interstage transformer to 600R recommendation needed

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