|[AMRadio] Globar brand thermistors|
gwt at mpinet.com
Mon May 30 11:48:05 EDT 2005
Now that you mention it Don, I remember those Globar resistors your
The card that the thermistor I used in the 117Z6 circuit listed it as a
It was made by Workman Electronics and clearly stated that it was a
I had it left over from my TV days.
I installed it and tested it. It was about 150 ohms cold. And dropped to
around 6 ohms after a
very short warm up. So it most certainly is better described as a
thermistor. I have no clue as to
why Workman would package it saying "Golbar Resistor", but that's what
Donald Chester wrote:
> Don't confuse Globar thermistors with Globar resistors. The latter
> are non-inductive power resistors often used in dummy loads and
> parasitic suppressors.
> My dummy load is made up of a dozen 600 ohm 150 watt Globars. Each
> one is about 18" long and 1" in diameter. Supposedly you can heat
> them to a dull red glow without hurting them, but I have never tried
> running that much power, and I'm not sure what such abuse would do to
> the resistance. I have heard of the ones used in parasitic
> suppressors of high power BC transmitters (50 kw) glowing under
> parasitic conditions.
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