Photo chopper circuit with fail-safe means

Details Photo chopper circuit with fail-safe means Photo chopper circuit with fail-safe means

1995-05-31

1996-06-25

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 84, 361 18, H02H 320

Patent

active

055306110

ABSTRACT:
A photo chopper circuit consisting of a photo chopper, an overvoltage detection/control device, a power switch, and a protective diode for connection to the power supply line, voltage detection line, and ground terminal of a satellite antenna allocator, wherein if the photo chopper is erroneously connected to the voltage line of the satellite antenna allocator for motor drive or the power supply line of the satellite antenna allocator, the overvoltage detection/control device is turned on to switch off the power switch or, the protective diode reverses flow of voltage to protect the photo chopper.

REFERENCES:
patent: 3870899 (1975-03-01), Stoffer et al.
patent: 4807083 (1989-02-01), Austin
patent: 4999729 (1991-03-01), Stifter et al.

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