Re: [Phys-l] CFLs again

[Brian Whatcott <betwys1@sbcglobal.net>]

At 01:07 PM 5/18/2007,  Dr George Spagna, you wrote:

> Students put an ammeter in series with the lamp, and voltmeter in
> parallel.  Both were digital multimeters reading true RMS current and
> voltage.  P = IV
>
> BTW - students were given the assignment to test the lamps.  They had to
> propose their own protocol.
>
> Dr. George Spagna

I expect this provides quite respectable numbers.
 But compare results found when driving a low voltage incandescent lamp
from a 120 volt AC supply via a series AC capacitor.

This was the basis for  a scheme to try to cheat the Electric Utility from
their metered dues.



Brian Whatcott    Altus OK    Eureka!