> The resistor now has to dissipate power only half the time now,
> with no effect on the LED

Ah, I'm with you now. If Carl's 660 is pk-pk then the resistor makes
2.33W for both 1/2 cycles. Diode (1N4007 ?) in series would drop
that to 1.17W. You'd save $ with lower wattage resistors at least

(can't blame the summer sun for my dopiness - cabin fever ?)

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