Re: LED Bulb for Outdoor Street Lamp?



On 1 May 2007 18:36:36 -0700, Edward
<Edward.Nuxters@xxxxxxxxx> wrote:



Ok.

So is there an LED that is rated for cold, wet outdoor use?

The problem with the CFLs is the ballast, not the electronics.

I don't understand. In a CFL the ballast IS the only
electronic system.

The issue with CFLs and cold weather is that the mercury
pressure drops and this makes the lamp harder to start.
Special ballasts can provide the extra voltage needed to
start a CFL in cold weather. LEDs have no such cold weather
problems. In fact, their performance improves as the
temperature drops.

However, depending upon the design of the electronic driver
used for the LED, it may or may not have problems working
with your electronic timer switch.

--
Vic Roberts
http://www.RobertsResearchInc.com
To reply via e-mail:
replace xxx with vdr in the Reply to: address
or use e-mail address listed at the Web site.

This information is provided for educational purposes only.
It may not be used in any publication or posted on any Web
site without written permission.

.



Relevant Pages

  • Re: Why did this work?
    ... Encouraged by the data I had been able to recover, ... plastic bag so that it did not short the electronics, ... read when the HD was cold and not once it warmed up? ... effect that the cold temperature might have on the semiconductors. ...
    (sci.electronics.repair)
  • Re: Need HELP with 2002 Mustang in-dash Radio Power Issues
    ... In the real world the hotter the junction of the semi- ... temperature the less current flow across the junction. ... to the other half of the spectrum where the junctions are abnormally cold. ... which should cause the electronics to warm up and begin to work. ...
    (rec.autos.makers.ford.mustang)
  • Re: Compact fluorescent light failures
    ... we tried a succession of CFLs here in our office to replace ... Colin Mitchell runs Talking Electronics ... am aware of with Leo Simpson who is the editor of Silicon Chip. ... It is just a possibility that since all of the CFL's used in Australia ...
    (sci.electronics.design)
  • Re: On this date in 1953...
    ... particularly when they are cold and 60F is "cold" for CFLs. ... Thermal mass, thermal input, losses, time ... No slow heaters, no ... You won't see this behaviour with *modern* CFLs. ...
    (sci.electronics.design)
  • Re: freezing of electronics
    ... I work and very often live in a very cold region of Canada. ... to places like Frobisher Bay, Bay Comeau, Ramouski, and others even more ... As far as the electronics is concerned, I have never had anything fail from ...
    (sci.electronics.misc)

Loading