Robert Atkinson wrote:
Hi,
I think this is incorrect,
1/ My ecodrive that I bought in the USA does not run 20% slow here in the UK
2/What about incandesent lamps and those with inverters?
As has been pointed out in an earlier post detecting the second harmonic
modulation in the light output of an incandescent lamp powered by a 50Hz
or 60Hz source is trivially easy, one can even detect it with an LED.
3/ even a cheap crysal is better than than the mains unless you average over
days. They vary the frequency (phase) slightly to load share.
Robert G8RPI.
--- On Wed, 20/4/11, Bill Hawkins<[email protected]> wrote:
Bruce
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