Modern spiral CFLs draw less current than equivalent-light-output
incandescents do, despite these CFLs having low power factor.
One more thing - the usual spiral CFLs are not inductive. Their low
power factor is almost entirely from harmonic content in the current
waveform, not much from lead or lag. However, the non-dimmable ones are
largely incompatible with most electronic switching devices not rated for
fluorescents or motors.
For those who are concerned anyway - dimmable versions have high power
factor and have recently started to become almost reasonably available,
though they are more expensive than non-dimmable ones. I have seen
dimmable CFLs at Target for most of this year already.
- Don Klipstein ( email@example.com)
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