A transformer that will work for 8 Volt unregulated supplies is the Stancor
Universal Rectifier Transformers. These transformers have a tapped primary
and 2 identical secondary windings. You can wire them so you can get from 4
to 32 volts DC. The RT-204 is 8 amp and the RT-206 is 12 amp. I have seened
these for sale on the web. (I bought one today.) You can find the data
sheets at the Stancor web page. (Use Google and search for Stancor and
RT-204)
I used an RT-206 to upgrade my SWTPC 6800 system 20 years ago. (24k of 2102
static RAM draws 9 amps and keeps a room warm at the same time.) I had to
use a second transformer for the +/- 12 volts.
Here are some pictures.
http://members.aol.com/swtpc6800/SWTPC/m6809/6809_side.JPG
http://members.aol.com/swtpc6800/SWTPC/m6809/6809_transformer.JPG
Michael Holley
Received on Fri Aug 31 2001 - 00:09:01 BST
