Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1981-11-04
1984-05-15
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361 4, H01H 4732
Patent
active
044491620
ABSTRACT:
A drive circuit for an electromagnetic device includes an inductor which can be connected across a pair of supply lines by way of a first switch. Energy is stored in the core of the inductor which can be released into the device to cause rapid operation thereof by opening the first switch and closing a second switch. When the energy in the inductor has been dissipated a low level of current is allowed to flow into the device by way of the inductor from the supply lines and this flow of current can be maintained by means of a diode when the first switch is closed to re-energize the inductor.
REFERENCES:
patent: 3925707 (1975-12-01), Bhate et al.
Eisenzopf Reinhard J.
Lucas Industries Limited
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