JohmT Back in the day of TV tubes. The heaters inside of the tubes were wired in series. The heater inside the tube, when cold, had very little resistance. As they got red hot the resistance grew. To prevent large surge current when you turned on the TV, there was a large thermistor placed in series with all the heater elements. The thermistor almost looked like a power resistor. It was common for the thermistor to go bad and it was easy to replace. The thermistor prevented a large surge current when the TV was first turned on.
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Today's Featured Article - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
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