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Old July 30th 07, 03:46 PM posted to rec.radio.amateur.homebrew
Jimmie D Jimmie D is offline
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First recorded activity by RadioBanter: Feb 2007
Posts: 287
Default microwave oven power supply


"Jimmie D" wrote in message
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"Jimmie D" wrote in message
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"msg" wrote in message
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Jimmie D wrote:

there are appaently 2 types, one is made to run off of 12 volts maybe
24 VDC and the other runs off of 120VAC.
I think the 120VAC initially converts it to 300VDC then aplies it to
the inverter circuit.. Still trying to find a schematic to verify. I
would think this technology could be a major help for amp builders
allowing us to build inexpensive power supplies and easily custom wind
the inverter transformers.

Please dig out the ones you have and take photos, front and rear of the
entire unit and if you don't mind, disassemble and photograph and
components. I can host the photos if you wish (email them to me).
This would _really_ help in the evaluation until any of us find
schematics.

Regards,

Michael
msg _at_ cybertheque _dot_ org


Seems i am going to be looking for a couple more as the wife laid claim
on these.


I did find some info saying the switcher was run using IGBTs.


Rats, service manual just shows it as a box, but I did find some useful info
here

http://fusor.net/board/view.php?site...y=115878692 1

Knowing the freq they switch at would be a big help


Jimmie