I have some Philips LED halogen downlighter replacements. They are rated at 3W and produce a noticeable glow when "OFF". They are on a 2-way circuit and the stray capacitance of the wiring allows enough current for a faint glow. Robert G8RPI.
--- On Sat, 30/1/10, Chuck Harris <[email protected]> wrote: From: Chuck Harris <[email protected]> Subject: Re: [time-nuts] White LED's To: "Discussion of precise time and frequency measurement" <[email protected]> Date: Saturday, 30 January, 2010, 14:27 I bought some of the LED replacements for Edison bulb incandescents, and they have an afterglow that lasts for several minutes. It is very much dimmer than when they are turned on, but is there none the less. -Chuck Bruce Griffiths wrote: > The speed isn't terribly surprising since the "phosphor" used is actually a > scintillator. > Unlike phosphors scintillators don't have long decay times so there is no > afterglow like that from a phosphor. > > The IKEA LED lamp output may not be significantly modulated if the wall wart > constant current supply may have an output thats a little smoother than just > rectified AC. > > Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
