Electric-supply-switch relay-circuit

Details Electric-supply-switch relay-circuit Electric-supply-switch relay-circuit

1996-02-22

1996-12-31

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

307131, H01H 4722

Patent

active

055900135

ABSTRACT:
An electric-supply-switch relay-circuit includes a first switch unit for passing an input current from an electric-supply line as a relay operating current; a relay for performing switching operations in accordance with the relay operating current; and a current detect control unit for detecting the input current. When the input current is found to be equal to or larger than a predetermined value necessary for operating the relay, the current detect control unit turns on the first switch unit to thereby allow the input current to the relay.

REFERENCES:
patent: 3603846 (1971-09-01), Toth
patent: 4137557 (1979-01-01), Ciarniello et al.
patent: 4140952 (1979-02-01), Miller
patent: 4402033 (1983-08-01), Mayer
patent: 5113307 (1992-05-01), Meyer et al.
Kieffer, C. J.; "Simple Low Voltage Alarm"; Electronics, May 4, 1962; pp. 44, 45.
Copy of Official Action issued by German Patent Office, including translation.

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