Don Kelly schrieb:
Quote:
"Eric R Snow" <etpm@whidbey.com> wrote in message
I envision a full wave rectifier and a capacitor. And it looks like
there is enough room in the control for these extra parts. Is there
anything inside the blanket itself that precludes Dc operation?
Thanks,
Eric R Snow,
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It could be done but I wouldnt recommend it. The thermostat switch would
likely fail quickly and start a fire as it is much harder to interrupt DC.
What you would be doing is trading an insignificant (if present) hazard for
a much greater one. Much safer to leave it alone.
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I agree and would like to mention a further problem:
If you just rectify (without filtering by a condenser) you get the same
heat, but you still have a lot of alternating current (and field).
If you filter to get pure DC, you need a very large condenser and ir
will give the peak voltage (165v for 117V AC) and the blanket will
overheat.....
Greetings R.Z.