26 Apr
2011
26 Apr
'11
2:44 p.m.
On 4/26/2011 2:17 PM, Tony Duell wrote:
<snip>
I'm sure it's just a typo, and I apologize in advance for being too dumb
to figure it out, but what is a baretter? (Sounds quite interesting,
but an internet search couldn't figure it out either, except for some
things in languages I don't understand.)
Thanks,
Charlie C.
The reason is
quite simple--tungsten-filament lamps (not that I
expect anyone to have any carbon-filament ones) have a very steep
resistance-temperature curve (higher "hot" resistance).
Tugsten filament lamps approximate a constant current load over quite a
range of voltages (am I the only person to rememebr the baretter?).