FIELD: measurement technology; instrumentation engineering. SUBSTANCE: indicating device has N semiconductor indicators connected in series so that cathode of first indicator is connected to anode of second indicator, cathode of second indicator is connected to anode of third indicator and cathode of (N-1) indicator is connected to anode of N-indicator. Every indicator is short-circuited by controlled switch. Common connection point of first indicator anode and noncontrolled contact of first switch is connected to one pole of power supply source through current generator, and N-indicator cathode and controlled contact of N-switch are connected to the other pole of power supply source. EFFECT: more effective indication. 2 dwg
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