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6 PCS/LOT NOS Vintage NEON Nixie Tube IN-12B (Analog B5991)
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6 PCS/LOT NOS Vintage NEON Nixie Tube IN-12B Features
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The IN12 is the Soviet analog to Western oval Nixie tubes such as the Burroughs B5991 and 8422.
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Key technical parameters of the glow discharge indicator IN-12B: Ignition voltage: no more than 170 V (≤170 V);
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voltage of maintaining of combustion: not less than 120 V (≥120 V);
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operating current for digits: no more than 2,5 mA (≤2,5 mA);
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operating current for comma: no more than 0,3 mA (≤0,3 mA); environment temperature: -60...+70 °C.
About 6 PCS/LOT NOS Vintage NEON Nixie Tube IN-12B
To save on costs, the tube does not have a cathode to represent the number '5', instead an additional '2' stencil is used, mounted upside down. Digit height is 19mm and the diameter of the tube is 30mm at it's widest point. This tube is actually mechanically compatible with the 14 pin sockets used by the B5991, though the underside nipple requires that said sockets have a centrally located perforation for clearance. This tube comes in two slightly different versions, the IN12B, which has a decimal point, and the IN12A, which does not. The IN-12 is widely used by hobbyists in projects, due to it's low cost and general ruggedness. The indicator of a glow discharge of IN-12B for work as the visual digital indicator of electric signals. Cathodes – in the form of Arabic numerals (from 0 to 9 and comma). Height of figures is 18 mm. Indication is made through a cylinder dome. Housing - glass. Weight of 10 g.
