Hi Jeff,
Just so you know, most of that power supply schematic is lifted from Tim Hulick
W9QQ, and the RF deck is lifted from Dick Stevens W1QWJ.
I'm not sure it really turns out any cheaper, the core material alone is about
$100 and if you don't have any hv wire, and sorts, that can add up pretty
quick. I was lucky enough to find some power mosfets on ebay , but pricing
them new was about $10 each. Add in a big filter cap on the primary $35, then
the high speed secondary rectifier diode strings about $40.
For me, it was more about reducing the weight, I thought the 8 pound
transformer and associated circuits would be neat. The other part for me was
that it would be a very intensive learning experience, building and working
through the circuit in detail, winding the transformer and working with square
waves, and other such none sense .
Paul, kg7hf
>>Given a decent 2KW TX alone can set easily set a guy back $400 or so, a
>>switching power supply seems the natural evolution for tube amps. But
I' >> ve not seen a switcher in a tube amp yet.
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|