Detecting a rapid change of a critical physical condition
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United States of America Patent
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Sep 24, 1985
Grant Date -
N/A
app pub date -
May 26, 1983
filing date -
May 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Instead of monitoring a thermal deburring operation by reference to whether a certain high temperature is reached and thereby indicting whether a successful ignition in the deburring chamber has taken place at every step of operation of the chamber, a circuit responsive to the rate of change of temperature is used to recognize a successful operation, thus permitting faster operation of the apparatus. Such a circuit is also useful for rapid detection of a short circuit circuit in electrochemical apparatus utilizing heavy electrical currents and variable amounts. In the latter case a digital circuit for measuring the amount of change at equal intervals of time is particularly useful.
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