James Sweet wrote:


If the 60 Hz (as others have corrected you) flicker bothers you how do
you watch TV (59.97 Hz vertical) or go to the movies (48 Hz ficker rate)?



Have you actually seen LED xmas lights with this in person? They have a
50% duty cycle and zero phosphor persistance, the flicker is not subtle,
particularly if you move your eyes and catch the lights in your
peripheral vision. A TV does flicker, but the phosphor persistance makes
it far less apparent. A computer monitor with low persistance phosphors
running at 60Hz is unbearable though, instant headache.

It prolly wouldn't take a very big electrolytic capacitor to level those
current pulses out, huh?

Easy to do fer your own strings I guess, but that doesn't help for all
the others you have to look at.

Fortunately that 60 Hz flicker rate is above what triggers
photosensitive epilepsy in most persons sensitive to that.

http://www.epilepsy.org.uk/info/photo.html

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."