[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