• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

GZ33 Rectifier drop?

OK, after my previous threads, regarding a 12AX7 and 6v6GT...I threw the toys out of the cot and decided to go with something a little more tried and tested :


Instead of using the 6SN7, I'll be using two NOS Brimar 6J5s, and triode-strapping the 6V6GTs.

Duncanamps PSU designer isn't playing ball on Linux at the moment, so here's asking for your help as I can't simulate anything.

How much would the GZ33 lose in such an environment? I've read up to 35V, and wondering if the previous 400-0-400 I specced to order with the 12ax7 design was indeed overkill or not given such a drop and rectification losses would render B+ takeoff at + - 250 (280 w/o 'the drop' from GZ33).

Smoothing will be carried out with a network of 7H and 16uF and 100uF tank caps

Cheers again,