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 - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
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