Auxiliary power supply and timer arrangement for time registering multifunctional electric energy meters
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United States of America Patent
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Apr 8, 1980
Grant Date -
N/A
app pub date -
Mar 31, 1978
filing date -
Mar 31, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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