Big Project LED's
(4) 33 volt 100 watt LED's wired in series, with a 25 amp 800 PIV stud mounted rectifier for 127 vac operation. Dang I wish this would work, it would save me a lot of money. Or then it might make the ...
Forum Discussion
There is a nice explanation of AC peak and RMS voltage at http://en.wikipedia.org/wiki/Alternating_current#Mathematics_of_AC_voltages
The half wave rectified voltage peak is 1.41 times the RMS AC voltage.
Looking at half wave graph it is striking how small a portion of the period has a high enough voltage to light up the LED if you have to keep the peak low enough to avoid killing the LED. I think some serious smoothing with capacitors or chokes would be necessary to avoid noticeable flicker and get the light on over half the time.
The half wave rectified voltage peak is 1.41 times the RMS AC voltage.
Looking at half wave graph it is striking how small a portion of the period has a high enough voltage to light up the LED if you have to keep the peak low enough to avoid killing the LED. I think some serious smoothing with capacitors or chokes would be necessary to avoid noticeable flicker and get the light on over half the time.
