Tube Amp Archive

I've just edited my post on page 5 dated Sun Jul 13, 2025 3:20 pm. How do we get to the 365V B+ listed on the schematic with a PT secondary of 125V AC. Something to do with my understanding of the voltage doubler CCT. Would someone be able to check my workings out and point me in the right direction...

Thanks Martin, I've ordered the 1N1729
Regards,

Steve

Thanks Martin, " FW Doubler will produce (120*1.414 - 0.7)*2 = 338 VDC." I got mixed up with the Ripple voltage of 3.2 x the load current. I've read up on ripple current and have a better understanding now. Thank you for the PT recommendation, I'll consider building a tag board FBR for the E-lator P...

Hi all, I'm new here, with a basic understanding of electronics. I have ordered a Elator PCB from AA Electronics and I'm looking for a power transformer for the build. Here in Australia the wall voltage is 240V. I have identified the Hammond Transformer 262EE6 that has a primary of 120v or 240v with...

How is the build coming along? What transformers did you order?

I'm thinking of building the same.

Regards,

Steve