Comments on: AskPablo: Green Holiday Lights?

By: Pablo

Pablo — Mon, 10 Dec 2007 11:19:25 +0000

Here is some new information about the lead in holiday lights:
http://www.cnn.com/2007/HEALTH/12/10/christmas.lights/index.html

By: Pablo

Pablo — Mon, 26 Nov 2007 23:24:41 +0000

Jankdc, AC electricity is supplied at a frequency of 60 Hz in the US. Since incandescent bulbs have a glowing filament which doesn’t cool fast enough between the alternating currents you perceive a constant glow. LEDs, on the other hand, are silicon-based and turn on and off with each oscillation, creating a barely detectable 60 Hz “strobing” effect. While this may be noticeable at close range, it is not detectable on the outside of a house. The light quality is also better so you get nice white lights, rather than a yellowish glow.

By: jankdc

jankdc — Mon, 26 Nov 2007 22:24:45 +0000

Let us know how they look. Earlier led xmas lights had a kind of strobe effect.

By: Werner

Werner — Mon, 26 Nov 2007 16:22:56 +0000

A photocell timer makes it even more efficient.
No moving parts and less power use by the timer.
Great advise Pablo.