Stand-by power supply

Details Stand-by power supply Stand-by power supply

1987-08-31

1990-10-23

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 85, 358909, 320 2, H02J 700, H01M 1044

Patent

active

049654624

ABSTRACT:
A stand-by power supply for preventing interruption of power to a communication unit, has a first connector for electrically connecting to the unit, a second connector for electrically connecting to and disconnecting from a main battery, an auxiliary battery, and a circuit electrically connected to the first and second connectors and the auxiliary battery for applying the main battery across the load, and responsive to the disconnecting of the main battery from the second connector to apply the auxiliary battery across the first connector.

REFERENCES:
patent: 3710134 (1973-01-01), Guthart
patent: 4044268 (1977-08-01), Hammel et al.
patent: 4315162 (1982-02-01), Ferguson
patent: 4662736 (1987-05-01), Taniguchi et al.
patent: 4697909 (1987-10-01), Machida et al.
patent: 4712196 (1987-12-01), Uesugi

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