Bistable relay circuit

Details Bistable relay circuit Bistable relay circuit

1987-08-10

1988-09-27

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

3611681, 361194, H01H 4700, H01H 4732, H01H 4714

Patent

active

047746238

ABSTRACT:
A bistable relay circuit adapted to be operated from a two polarity supply of predetermined voltage, includes a control relay having a coil exhibiting hysterisis, and at least a first single pole, double throw switch, having one pole contact and two non-pole contacts. The control relay coil has a resistance value which is low compared to the resistance value of the first resistor, while a current operatively flowing therethrough is insufficient on its own to energize the control relay. A first resistor is in series with the coil of the control relay. The series combination of the control relay coil and of the first resistor are connected to the power supply. The circuit also includes a second single pole, double throw switch, having one pole contact and two non-pole contacts. A second resistor is connected to the pole contact of the first switch, and to one of the non-pole contacts of the second switch, and a capacitor is connected to the pole of the second switch and to one polarity of the power supply. The remaining non-pole contact of the second switch is connected to the node where the first resistor and control relay coil are connected.

REFERENCES:
patent: 3264499 (1966-08-01), Moser et al.

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