In Reply to: RE: 60 Hz Hum posted by John Elison on April 1, 2014 at 13:22:29:
LED replacement bulbs for incandescent bulbs. They also operate on DC, but have a cheap/small switch mode power supply in the bulb to rectify the AC mains for the LEDs. At some point these may be the only bulbs available as incandescent bulbs are phased out and the market rejects florescent lamps.
Gsquared
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Follow Ups
- He may be using - G Squared 00:04:32 04/02/14 (2)
- RE: He may be using - AbeCollins 20:32:04 04/02/14 (1)
- Abe if all that environmental correctness goes out of fashion - G Squared 09:32:50 04/06/14 (0)