What's the Turns Ratio of the TFA-204?

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Posted by jdrouin (A) on March 9, 2017 at 20:10:37

In Reply to: RE: TFA-204 300B Operating Points posted by jdrouin on March 9, 2017 at 18:50:31:

I'm trying to model a circuit in LTSpice and the B+ is dropping way too much as it goes through the 3K primary of the TFA-204 to the plate of the 300B. Either I'm using the software incorrectly or 3Kohm might not be the actual value affecting voltage.

A Help Page at DIY Audio Projects says, "To determine the load resistance for the desired given speaker load, square the turns ratio you calculated and multiply that number by the desired speaker load (i.e. 4, 8, 16 ohms)."

Can you tell me the turns ratio of the TFA-204 so I can calculate this?

Thanks,

Jeff

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Follow Ups Full Thread

Topic - TFA-204 300B Operating Points - jdrouin 12:34:03 03/07/17 (14)

First Simulation - jdrouin 14:42:36 03/11/17 (4)

RE: First Simulation - jdrouin 12:05:24 03/12/17 (3)

RE: First Simulation - Paul Joppa 20:38:23 04/07/17 (0)

RE: First Simulation - Gordon Rankin 16:28:40 03/13/17 (1)

RE: First Simulation - jdrouin 18:06:45 03/13/17 (0)

RE: TFA-204 300B Operating Points - jdrouin 13:39:17 03/10/17 (2)

RE: TFA-204 300B Operating Points - sideliner 21:50:16 03/12/17 (1)

RE: TFA-204 300B Operating Points - jdrouin 22:08:26 03/12/17 (0)

RE: TFA-204 300B Operating Points - mqracing 14:33:19 03/09/17 (3)

RE: TFA-204 300B Operating Points - jdrouin 18:50:31 03/09/17 (2)

What's the Turns Ratio of the TFA-204? - jdrouin 20:10:37 03/09/17 (1)

RE: What's the Turns Ratio of the TFA-204? - mqracing 20:56:50 03/09/17 (0)

RE: TFA-204 300B Operating Points - jdrouin 16:13:49 03/07/17 (0)

RE: TFA-204 300B Operating Points - triode3 14:58:29 03/07/17 (0)

Follow Ups

What's the Turns Ratio of the TFA-204? - jdrouin 20:10:37 03/09/17 (1)

RE: What's the Turns Ratio of the TFA-204? - mqracing 20:56:50 03/09/17 (0)

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