Thursday, October 25, 2007

Power Supply Transformer

The power supply I have for the ST-35 project was custom made by Electra-print. According to Jack, "This will power a tokomak."

Here are the specs that came with it:

  • Secondary is 310-0-310VAC at 200 ma DC
  • 6.3V at 3.0 amp windings for filaments
  • Primary is 120VAC 50/60 Hz.
  • Measures 5 5/8 inches high X 3 3/4 inches wide by 4 1/8 inches deep over end bells.
  • Mounting hole bolt pattern us 2 15/16 inches by 3 5/8 inches
  • 9 lbs


This thing is a monster!!! Now I need to figure out what to do with it.

DIYTube ST-35

Its been a while since I've posted. I'm about to start building a DIYTube ST-35 amplifier. At least, that is what I started out to build. When I first started investigating this project I wanted to use Magnequest's version of the Z-565 output transformers. Unfortunately, Mike quit making them when I contacted him. Fortunately, I came across a listing on Audiogon for a set of MQ transformers with M3 laminations and brass bells, as well as an Electra-print power transformer custom designed to support a tube rectifier.

After a few exchanges with the seller, I discovered Vaughn Audio and its associated forum. While I have only started one thread, the folks there appear to be very knowlegable and eager to share the novice.

I've decided to learn a little more than how to solder and follow directions this time around. I'm going to start off with the power supply. We'll see how things go.