NASA NTRS · 19700000466
A conceptual current surge protector for incandescent lamps
Abstract
Negative-temperature coefficient device /thermistor/ in series with a lamp filament alleviates high filament surge current during initial application of power. The thermistor should be selected for a cold resistance approximately equal to one fourth of the normal hot resistance of the filaments to be protected.
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Macomber, G. A.. 1970-08-01. A conceptual current surge protector for incandescent lamps. https://ntrs.nasa.gov/citations/19700000466
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