Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1983-01-11
1985-08-06
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361208, H01H 4732
Patent
active
045339724
ABSTRACT:
An electronic switching device employing a self-keeping type relay having an exciting coil (41), which comprises a signal generator (1), a first switching transistor (5) connected through a diode (43) to the coil, a second capacitor (42) connected in series with the coil, a second switching transistor (44) connected across the coil and the second capacitor, a first capacitor connected across the second capacitor, the coil, the diode and the first switching transistor, a high resistance circuit (3) interposed between a power source (E) and the first capacitor, whereby the exciting coil is supplied with a positive momentary discharging current from the first capacitor through the first switching transistor so as to set the relay and the second capacitor and is supplied with a negative momentary discharging current from the second capacitor through the second switching transistor so as to reset the relay.
REFERENCES:
patent: 3702425 (1972-11-01), Hoffmann et al.
patent: 4257081 (1981-03-01), Sauer et al.
patent: 4399482 (1983-08-01), Inoue
Eisenzopf Reinhard J.
Omron Tateisi Electronics Co.
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