Electronic trip device comprising a power supply control device
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United States of America Patent
Stats
-
Jul 30, 1996
Grant Date -
N/A
app pub date -
May 10, 1994
filing date -
May 21, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The power supply control device comprises two regulating modes, linear regulation and chopping regulation. A current from a sensor, rectified by diodes, supplies a power supply circuit comprising a storage capacitor and a regulating transistor. A resistor and a control circuit measure the value of the current and select the regulating mode via a selector. If the current is lower than a preset threshold regulation is linear, the base of the transistor is connected to a Zener diode. When the current exceeds a preset threshold regulation is chopped and the base of the transistor is connected to the output of a comparator.
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