FIELD: railway transport; signalling. SUBSTANCE: device has time delay holding relay, threshold element, time setting chain, pulse generator, amplifiers, inverter, switch, thyristor optrons, transformer, rectifier and output relay. Winding of time delay holding relay is connected through inverter to optron photothyristor. Output relay is connected to light emitting diode through amplifier, transformer and rectifier. EFFECT: improved reliability of operation. 1 dwg
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Authors
Dates
1997-06-20—Published
1993-10-21—Filed