Philips Marathon 65W PL-EH CFL

[Victor Roberts]

This is a follow-up to our discussion about cooling CFL ballasts.

I just noticed that the Philips Lighting brochure I picked up at Light
Fair has a new lamp listed as the Marathon 65W PL-EH. This is a
65-watt screw-base CFL, so ballast temperature is a real problem.
Other reputable companies don't sell screw-base CFLs with power
ratings above 25 to 30 watts because of temperature problems when the
lamp is mounted base up. However, Philips has this interesting comment
in the brochure - "Unique air pump cools down the circuit to allow for
long lamp life." Now, I'm really sorry I didn't take a look at this
lamp at Light Fair, since I wonder what this "air pump" is. Is it a
fan? Or a heat pipe of some sort? Why did they use the term "pump"? I
can't find the lamp listed on the Philips Lighting US Web site. Does
anyone have more info about his lamp?

--
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.