FIELD: feeding electromagnetic operating mechanisms from single-phase ac supply mains.
SUBSTANCE: proposed device has button for its connection to power supply through make contact, single-phase rectifier bridge whose output is connected to electromagnetic operating mechanism coil, current-limiting capacitor connected in series with single-phase rectifier bridge, and contacts affording fast connection of electromagnetic operating mechanism, as well as relay with its make contacts connected in parallel with current-limiting capacitor and in series with current-limiting resistor connected thereto; relay coil shorted out by diode is connected at device input through series-connected diode, variable resistor, and time-setting capacitor shorted-out by discharge resistor connected in series with button break contact.
EFFECT: unique design of device for feeding electromagnetic operating mechanism that has one coil and no contacts of its own.
1 cl, 1 dwg
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