I have a need to use LEDs as power indicators on an AC circuit. If it were DC, I'd have no problem. I don't have a clue as how to calculate the limiting resistor value. Is it the same as DC? Is it 1/2 the value, since the LED will be conducting only 1/2 of the cycle? Is the value calculated based on the peak (vs RMS) voltage? The circuit in question is 24VAC, so will this even be possible since the reverse voltage of the LED is typically about 5v?
Any insight is greatly appreciated.
Any insight is greatly appreciated.