Auxiliary power supply and timer arrangement for time registerin

Details Auxiliary power supply and timer arrangement for time registerin Auxiliary power supply and timer arrangement for time registerin

1978-03-31

1980-04-08

Smith, Jerry

Boots, shoes, and leggings

324116, 324142, G06F 1520, G01R 1157, G01R 2106

Patent

active

041975820

ABSTRACT:
A time based measuring system for electric energy meters includes a non-volatile data memory for processing time related data. The system further includes a main DC supply energized from an AC source and an auxiliary DC supply energized by a primary battery source. The data memory and a low power secondary timer circuit are energized from the auxiliary DC supply in response to failure of the main DC supply. A low power circuit arrangement including the secondary circuit continues current time and calendar registrations during a power outage.

REFERENCES:
patent: 3747068 (1973-07-01), Bruner et al.
patent: 3937890 (1976-02-01), Blethen et al.
patent: 4050020 (1977-09-01), Germer et al.
patent: 4065676 (1977-12-01), Elias
patent: 4077061 (1978-02-01), Johnston et al.

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