Re: Running a 208V radiant ceiling heater from 240V

On 2007-01-19, John Sevinsky <johnsevinsky@xxxxxxxxx> wrote:
Although this won't be perfect, I thought about some diode arrangement
that would supply power to a pair of these panels in parallel for one
half of the cycle and in series for the other half. So, they would be
getting 240V half of the time and 120V half of the time. That should
average out to less than their rated capacity, but it's better than
setting them on fire.

Were you able to construct such an arrangement? I do not think it can
be done with just diodes, unfortunately.

I also thought about a more complicated circuit using triacs or

The 208v 375w panel, when hot and running at the correct voltage, would
draw 1.8A. So, how about putting 3 12v 20watt light bulbs in series
with each? The light bulbs themselves will also provide heat at nearly
perfect efficiency, and presumably the light can be productively used
somehow.
.

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