Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1985-03-12
1987-11-10
Scott, J. R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 87, 323279, 323268, H02H 902
Patent
active
047061596
ABSTRACT:
A short circuit protection circuit and associated method is provided, for a device with a first and second power supply. The circuit comprises a pair of switches connected to the respective power supplies, a current sensing element connected to each switch and an output buffer circuit connected to each switch for preventing either power supply from being shorted. The circuitry utilizes advantageously integrated circuit technology. Through the use of the circuitry the power supplies are effectively removed from the output buffer when excessive current is sensed.
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DeSha Michael J.
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
Scott J. R.
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