[R-390] Dead horse foaling,. Monkey wrench thrown!
David Wise
[email protected]
Sun, 20 Jan 2002 21:58:12 -0800
Ok ok, for those who don't believe
the math, I did an experiment.
I set up a 24V (i.e. 25.2) transformer
feeding a #93 12V bulb. Transformer is
on a variac. Voltmeter on transformer
primary. Initial voltage: 60V so
the lamp gets 12. I set up the bulb
in a dark room in front of a photographer's
light meter. I noted the reading,
put a diode in series with the bulb,
and increased the variac until the
light meter read the same as before.
Answer: 86V. *NOT* 120V. And 86V
is approximately 120/sqrt(2).
Regards,
Dave Wise