Electricity: electrical systems and devices – Safety and protection of systems and devices – Circuit interruption by thermal sensing
Reexamination Certificate
2008-05-27
2008-05-27
Sherry, Michael (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Circuit interruption by thermal sensing
C361S025000, C361S093800
Reexamination Certificate
active
11261628
ABSTRACT:
An apparatus is disclosed that drives an inductive load according to a control signal from an external controller transmits temperature data to it for indicating a condition of the inductive load through a line driver. The external controller regenerates the control signal according to the temperature data. According to the control signal, the apparatus operates a pair of power supply circuits to complementarily supply power to the load. Thermal conditions of the power supply circuits and the line driver are monitored for detecting an overheat condition. The transmission of temperature data to the external controller is enabled as long as no overheat condition is detected in both of the power supply circuits and line driver. If an overheat condition is detected in at least one of the power supply circuits and line driver, heat protection is performed and the overheat condition is communicated to the external controller.
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Clark Christopher J
Denso Corporation
Oliff & Berridg,e PLC
Sherry Michael
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