From a thread several weeks ago, I am powering numerous LED's from 24=20 VAC. The majority brightness is as desired, but one LED is very dim. The=20 method is: 24 VAC > 332 NF capcitor > (LED and 1n4004 parallel anode to cathode) >=20 1.5k resistance > VAC common The LED of the topic is a Digikey 516-1330-ND. Parameter HER/Orange Peak Forward Current 90 mA Average Forward Current[1] 25 mA DC Current[2] 30 mA In a 5 VDC circuit with desired brightness, 191 ohm resistor series, 15=20 ma, 1.96 volt across LED. Normally I would use as first choice a 470 ohm=20 resistor. In the AC circuit, across the LED only 1,5 ma. I have tried various=20 bigger and smaller resistors and caps with not desired results. I have=20 other LED's that I have adjusted the brightness by changing the=20 Resistance, but this LED is different. Any comments appreciated. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .