Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1975-10-31
1978-01-31
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361153, H01H 4732
Patent
active
040718778
ABSTRACT:
A circuit provides means for driving a load under control of a plurality of signals including a drive timing signal which is given a maximum permissible duration by the circuit to prevent damage to the load, an operating signal, and an inhibit signal which prevents operation in case of excessively low power supply voltage. A power supply of opposite polarity is connected to the load so that the load rapidly dissipates its energy into said power supply at the time of turn-off of the drive circuit.
REFERENCES:
patent: 3206651 (1965-09-01), Proulx
patent: 3628100 (1971-12-01), Zettler
patent: 3748537 (1973-07-01), Vigini
Bruckner Ronald L.
Stewart John W.
Cavender J. T.
Moose Jr. Harry E.
NCR Corporation
Sessler Jr. Albert L.
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