DEVICE FOR CONTROL OF VACUUM LUMINESCENT INDICATORS Russian patent published in 1997 - IPC

FIELD: indication equipment. SUBSTANCE: device has anode and grid commutators which control inputs are connected to control signal unit; their power supply inputs are connected to direct current power supplies of anodes and grids of positive and negative polarity with common point. Cathodes of indicators are connected in series. In addition device has vacuum-tube direct current source of negative polarity and vacuum-tube gate which control terminal is connected to control signal unit. First terminal of vacuum-tube gate is connected to first cathode terminal of first indicator. Second terminal of vacuum-tube gate is connected to negative terminal of vacuum-tube direct current power supply. Second terminal of last indicator is connected to positive terminal of vacuum-tube direct current power supply and common direct current power supply point. In addition device has diodes which anodes are connected to first terminals of cathodes of corresponding indicators. Cathodes of these diodes are connected to common direct current power supply point. This design results in possibility to decrease difference in intensity of luminescent light from anodes along cathodes. EFFECT: facilitated information access. 2 cl, 1 dwg