Circuit for the protection and supply of consuming circuits
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United States of America Patent
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N/A
Issued Date -
Sep 11, 2003
app pub date -
Mar 11, 2003
filing date -
Apr 27, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to an electronic circuit for supplying and protecting another consuming circuit against undesirably high electrical values. The supply circuit is formed with at least 2 independent monitoring circuits performing independent measurement of an error state on the basis of a common threshold value generated from a value determined in the circuit. Recording of an error state in a monitoring circuit results in activation of at least one independent current path between the supply potential of the supply circuit and an associated reference value. This ensures that the electrical circuit increases the current through a separator circuit, which, after activation, isolates the consuming circuit from the remaining circuit. Also, the same reference value may be used for several monitoring circuits whereby tolerance deviations for components may be compensated so that a supply voltage and a safety voltage have values with a small difference.
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