Low power consumption relay switching circuit for use in conjunc

Details Low power consumption relay switching circuit for use in conjunc Low power consumption relay switching circuit for use in conjunc

1978-12-26

1980-05-20

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361187, 361194, 179175, H04M 322

Patent

active

042042410

ABSTRACT:
An improved circuit for interfacing between a test desk, a subscriber line and an electronic switching center is disclosed herein. The disclosed improvements allow the relay circuit to operate in response to a predetermined threshold current value while requiring only a minimal current flow and thereby providing the capability to use components lower rated in terms of power consumption.

REFERENCES:
patent: 3875351 (1975-04-01), Kennedy
patent: 3928735 (1975-12-01), Kennedy
patent: 3951248 (1976-04-01), Feiner et al.
patent: 4017696 (1977-04-01), Falk

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