Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1995-09-22
1997-08-26
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
324750, 324764, 307 71, 307 86, G01R 31302, H02J 100
Patent
active
056616260
ABSTRACT:
An excess current detection and control circuit for a power source system to provide an overall electric current to a device to be tested, includes: a plurality of device power sources connected in parallel with each other to form the power source system whereby supplying an electric current to the device wherein each of the device power sources is provided with a predetermined excess current level flowing to the device and maintaining the excess current without further increasing the electric current level and generates an excess current detection signal when the electric current reaching the excess current level, a power source condition monitor device connected to the plurality of device power sources for receiving the excess current detection signal from each of the device power sources and generating an interruption signal only when receiving the excess current detection signal from each and all of the device power sources connected to the device to be tested, and a central processor unit for determining whether the overall current flowing through the device under test is larger than a predetermined excess current level of the device under test when receiving the interruption signal from the power source condition monitor device.
REFERENCES:
patent: 4637020 (1987-01-01), Schinabeck
patent: 5059889 (1991-10-01), Heaton
Advantest Corporation
Gaffin Jeffrey A.
Sherry Michael J.
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