Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Patent
1987-06-30
1989-01-10
Paschall, M. H.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
358243, 361 91, 328 9, H02H 320
Patent
active
047977710
ABSTRACT:
A phase-lock-loop circuit of a deflection apparatus generates a first signal at the horizontal frequency during normal operation. The first signal is coupled to a phase-control-loop circuit that maintains the deflection current timing in phase with the first signal. A fault protection circuit disables the generation of signal transitions in the first signal when a fault condition occurs. A circuit that detects the presence of transition edges in the first signal prevents the operation of the deflection output stage when the transition edges in the first signal are missing.
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A Technical Data Publication for a Bipolar Linear Integrated Circuit (IC) Silicon Monolithic TA7777p that is made by Toshiba Corp. Japan.
U.S. Patent Application Ser. No. 068,085, entitled Deflection Synchronizing Apparatus, in the name of Jeffery Lendaro that was filed concurrently with the above-captioned patent application.
Doty, II James H.
Lendaro Jeffery B.
Henig Sammy S.
Laks Joseph J.
Paschall M. H.
Rasmussen Paul J.
RCA Licensing Corporation
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