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Grumpy The Mule · September 13th 08, 02:49 AM posted to rec.radio.amateur.homebrew

wrote in
:

Yeah, I was planning on using pretty much the whole input section to
the PC power supply. The one I am looking at I think I can cut out the
whole circuit with a coping saw and mount it on some standoffs. This
would put the rectifiers and caps on a seperate little chassis and I
wont have to shoehorn in the 'lytics on to the inverter board.

I was noticing that the schematic for the 120VAC uwave inverters is
pretty much the same as the 240VAC inverter. I was expecting mains
input to be different. What I was expecting was a voltage doubler on
the 120VAC board since the 240VAC board used a bridge. This would mean
that the inverter section is designed to run off of anything from
150VDC to 300VDC . I need to take a closer look at just what are the
differences in the 120 and 240 inverters.

Jimmie

Jimmie

Frankenstein style construction. Hopefully you'll be tempted to
shout "IT'S ALIVE!" but without the arcs and sparks.

A 2:1 input range is a piece of cake for a flyback. An 8:1
range isn't unheard of in commodity products. Not being
strictly bounded by the transformer (coupled inductor) turns
ratio can be handy!

There need not be any differences in the power components.
The control parameters important to operation of the oven
might need adjustment though.

That said, optimization for each range could save a few coins.
Make a million ovens or two and it adds up.