Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1980-10-16
1982-03-02
Miller, J. D.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
H01H 4732
Patent
active
043181546
ABSTRACT:
A drive circuit responsive to an applied electrical signal for generating a voltage to control the actuation of an electromagnetic relay is disclosed. The voltage has a first and a second level for picking-up and holding-in, respectively, the relay. The first voltage level has a peak value which is developed by an internal charging circuit and is additive to the second voltage level supplied by an external source. The first voltage level is higher than required to actuate the relay which enhances the pick-up speed of the relay.
REFERENCES:
patent: 3021454 (1962-02-01), Pickens
patent: 3064165 (1962-11-01), Kennedy
patent: 3116441 (1963-12-01), Gieffers
patent: 3483395 (1969-12-01), Sauber
patent: 3660730 (1972-05-01), Mason
Transistor Circuit Analysis and Design by John J. Corning, Published by Prentice-Hall, Inc., Copyright 1965, Paragraph 15.7, p. 406.
Freedman William
General Electric Company
McMahon John P.
Miller J. D.
Schroeder L. C.
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