120v LED vs CFL vs 12v Lamps Results
Following up on another thread discussing using inverter and 120v lights with LEDs or CFLs. I have been using a CFL for a reading lamp for some years, but now have an LED bulb to make a comparison. ...
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road-runner wrote:
After making a few random measurements in the past, my conclusion is that LED lamps are a little more energy efficient than CFL lamps. About a 10% power reduction for the same amount of light (a subjective, no instrumentation measurement for the light level). LED lamps that flicker at 60 Hz can drive me nuts. I see this mainly in Christmas lights.
Only the dirt cheap 120V LEDs that use only a resistor flicker at 60hz (noticeable with cheap LED Christmas lights), BETTER LEDs for 120V employ a constant current regulator which is a fancy word for a switching power supply (operates above 20Khz).. That regulator feeds the LED with DC voltages and no flickering should be noticed.
