This is the simple version of a white LED lamp that can be directly powered from mains. It can give ample light even for reading purpose. Capacitor Cx along with diodes D1 through D4 forms the AC step ...
OK form reading this forum we are trying to make use of an led running at 110 volts vac <BR><BR> <BR>hot 110 vac-->20kohm@1/3watt>>>--cathode led<BR><BR>neutral ...
Editor's Note: Here's another take on the transformerless AC line power supply, which finds use in some well-insulated, low-power devices. Our technical reviewer pointed out that C ac should be an ...
High-brightness LEDs are an inexpensive, robust, and green replacement for halogen light bulbs. This Idea for Design shows you how to apply an AC LED driver to convert the usual 12 or 24 V AC ...
Jianzhong Jiao describes the work of IES and CIE committees in formulating testing standards for AC LEDs, including temperature controls and the range of optical measurements needed to characterize ...
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