Method of and apparatus for controlling the opertion of electrom

Details Method of and apparatus for controlling the opertion of electrom Method of and apparatus for controlling the opertion of electrom

1988-02-24

1989-10-10

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

123179R, H01H 4700

Patent

active

048736074

ABSTRACT:
Techniques for controlling the operation of an electro-magnetic switch are provided. The current supplied to an exciting coil of the electro-magnetic switch is gradually increased until the contacts of the switch are closed. After the closure of the contacts, the exciting current is reduced to the minimum level needed to hold the contacts closed.

REFERENCES:
patent: 4114184 (1978-09-01), Stampfli
patent: 4418289 (1983-11-01), Mortenson
patent: 4452210 (1984-06-01), Sasayama et al.
Japanese Patent Public Disclosure No. 101672/1986.

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