GTE Sylvania - GB13J – 13J - Resistance Lamp, Draws 0.5Amp @ 36V, New

GTE Sylvania - GB13J – 13J - Resistance Lamp, Draws 0.5Amp @ 36V, New A "resistance lamp" refers to a type of lamp, typically an incandescent bulb, where the light is produced by a filament that has a significant electrical resistance, causing it to heat up and glow when current flows through it; essentially, the filament acts as a resistor that generates light due to its high resistance to current flow. Primarily used to control the current flow in a circuit by intentionally limiting the amount of electricity passing through it, often in situations where a precise level of current is needed, like in older lighting systems or specific electronic applications where a stable, controlled current is required. Status: Discontinued The No. 13 Type Resistance Lamps are the same as the No. 12 Type Resistance Lamps except they are equipped with moulded bases and soldering terminals instead of the screw bases. Approximate overall length 4 - 1/4 inches. Diameter approximately 15/16 inch. Also referred to as Resistance Lamp Ballast Relay Tubes. Type: Tungsten filament resistor lamps are equipped with a molded base having two soldering terminals. Average current at 1V is 0.130Amps, 5V is 0.274 Amps, 40V is 0.634 Amps Alternate: Northern Electric NE-13J, Western Electric Type 13J, Applications: 13J Resistance Lamp is a current regulator tube. It is used in early telecommunications apparatus. New Old Stock – Vintage - Rare Made in USA