Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1987-04-16
1989-01-17
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 93, 307 10R, 307 10LS, 340 76, 340 80, 340 81F, 340 94, 340 95, 315 83, 318 78, H02H 3087
Patent
active
047991267
ABSTRACT:
Protection for D.C. electrical circuit branches against incipient overloads comprises the use of semiconductor devices known as intelligent switches. An intelligent switch comprises a main controlled conduction path whose conductivity is controlled by an external control input. The semiconductor architecture is configured to possess internal self-protection for the main controlled conduction path against incipient current and/or temperature rises exceeding the device's rating by rendering the main controlled conduction path non-conductive when such incipient conditions are sensed. The invention, recognizing that this internal self-protection attribute can be used also to provide protection for external circuit components connected to the switch in the branch, further comprises the elimination of external protective devices from the branch such that the intelligent switch itself provides the entire overload protection within the branch. The invention is especially beneficial in automotive electrical application, imparting improvements to particular specific circuits of automotive electrical systems.
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Kruse James W.
Windle W. Eric
AuBuchon F. David
Jennings Derek S.
Navistar International Transportation Corp.
Pellinen A. D.
Sullivan Dennis K.
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