that bridge rectifier isn't correct. half the diodes aren't oriented correctly.
Reply to collin
collin – texas
November 24, 2011 - 00:43
misread. rectifier is great!
Reply to collin
Krentus – Wroclaw
December 10, 2011 - 05:00
You're right, it's Graetz who was wrong:)
Espen – Norway
November 01, 2011 - 15:35
I don't see the tone circuit in this schematic. Where is it at?
Reply to Espen
Espen – Norway
November 01, 2011 - 15:38
Sorry, I found it :) It was hidden at an unusual spot :)
dave-the-hat
October 27, 2011 - 17:24
there is a site selling a transformer you could use its got extra taps for valve heater and if you wire up a rotary switch you can get full power 1/2 power ans 1/10 power
Okay, I guess the switch on the power transformer does the job. My mistake.
martin electrothermionicfluiddynamics engineer – florida
June 30, 2011 - 19:08
on second thought maybe you could push 400 from the transformer but dont kill me if you fry your 12ax
martin electrothermionicfluiddynamics engineer – florida
June 30, 2011 - 15:03
this schematic is incomplete, but based on the triode and pentode requirements. the first transformer from the plug if in usa 120v then you need 1:2 ratio but the transformer output cant be above 290v recommend 250v max and filaments no more than 12 volts and the final output transformer is a af transformer with 16 and 8 Ohm taps
hope this helps
zul
January 29, 2011 - 14:13
how about the transformers used? what type? electronic noob here ehehe
that bridge rectifier isn't correct. half the diodes aren't oriented correctly.