Direct-voltage power pack
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United States of America Patent
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Jun 26, 2001
Grant Date -
N/A
app pub date -
Apr 15, 1999
filing date -
Apr 17, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A circuit configuration for a direct-voltage power pack of an electronically controlled switching device, particularly of a small programmable control system, which is externally supplied with voltage, having an arithmetic-logic unit, signal inputs and signal outputs. This circuit has a back-up supplier for the backup supply of the supply voltage and a detector for detecting the input voltage which is not backed up, the detector interacting with the arithmetic-logic unit in such a way that, in response to any voltage failure, the signal inputs are reliably prevented from being read in.
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