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#14
11-08-2016, 03:01 PM
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If the heater string adds up to around 84V, you can use a rectifier diode, without any filter cap, to effectively drop the 120VAC line. This saves the energy that would be wasted as heat. Remember, it's power = volts squared over resistance. The diode cuts the power in half, and the effective voltage is 120V times the square root of 2 (from the half) which then = 84V.
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