On 8/15/2007, James Sweet posted this:
"Gene E. Bloch" wrote in message
...
On 8/15/2007, William Sommerwerck posted this:
Agreed. However there is a newer kid on the block, and that's the power
factor corrected SMPS. This technology has been reduced to an IC, and it
shows up in items as humble as compact flourescent light bulbs. If the
power factor is 1.00 or approaches it, then the current and voltage are
largely in-phase.

I checked some excellent CFLs from Home Despot (instant turn-on, excellent
color balance) with the Kil-a-Watt. It showed a power factor around 65%,
which struck me as rather low. Such a low PF also partly offsets the
money-saving advantages of fluorescent lamps.

Opinions, anyone?


Virtually all CFLs are low power factor, HPF would add to the cost and people
wouldn't buy them.

In the US, domestic electric meters measure true power, so the power factor
doesn't make any difference in the bill, it does strain the distribution
system more though.

I was a little startled - you answered my post, clipped my (admittedly
silly) remark, and went on to actually answer the previous post.

I've never made a mistake like that (you can be forgiven for not
believing that!).

--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")