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KT120 SE PS voltage option....

I decided to buy all of the iron from Thermionic Lab figuring go big or go home...

The specs provided by them, 425-400-0-50-400-425 Vac/160mA was a bit of a surpise,

They offer more voltage is better option lol... The Hammonds are 400V--

Stephi mentioned in one of the vidios that she might try using a solid state rectifier to see what the KT120s could do...

I dont plan on solid state rectificaiton using the 425v

SInce her B+ is 495 Im guessing I mught get about 520V...

That got me thinking about what changes (if any) might need to be figured in if I decided to wire up the 425v taps..

Increase the value of the plate resistor to the 6JC6A to keep the published 220V at that plate ?

3 answers0 replies

3 Comments

audiofanman

Oct 20, 2023

Disregard, I see how how you modified keggers by using the 220 ohm vs his 150...

Steviewunda

Nov 23, 2023

Replying to

Hi - did you use the 425v taps? I used the 400v taps, but wondered what difference using the 425v would make?

Cheers, Stephen

audiofanman

Dec 15, 2023

Replying to

I have not finished, delays upon delays! That said will probably use the 400 taps as higher voltage caps are kinda hard to locate. Im guessing the 425 taps would be perfect if we were using self bias..