Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2006-05-30
2006-05-30
Sircus, Brian (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C348S378000
Reexamination Certificate
active
07054125
ABSTRACT:
The present X-ray protector requires no raising of a voltage to be impressed to a cathode ray tube (CRT) and no complicated control procedure for testing the X-ray protector's operation. The voltage applied to the CRT is detected by a detection winding of a flyback transformer and a detection circuit. An input line, which includes a resistor inputs a signal based on the detected voltage to a microcomputer. The microcomputer controls whether a transistor is conductive or unconductive. An emitter of the transistor is connected to one terminal of the resistor, and a collector is connected to the other terminal of the resistor. When the transistor is conductive both ends of the resistor are short-circuited causing the electric voltage of a signal input to the microcomputer to be raised, thereby enabling testing of the X-ray protector without the need to apply a higher than normal voltage to the CRT.
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Demakis James A.
Orion Electric Co. Ltd.
Sircus Brian
Wenderoth , Lind & Ponack, L.L.P.
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