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#27
July 5th 06, 06:11 PM
posted to rec.aviation.owning
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Airport Power
Ron Rosenfeld wrote:
: What are the design considerations for converting a heating element that : has been designed to function on 120VAC to 12VDC? : For example, I have a TANIS system in my a/c which draws about 375W @ : 120VAC. You wouldn't convert it. You'd just hook it up to ~125 VDC. It will work great. You may have trouble if it has an electronic thermostat (SCR/TRIAC) because these require the reversals of the AC voltage to stop conducting (you can turn on a TRIAC with DC across it, but you have to interrupt the current flowing to shut it off). -- Aaron C. 
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