Ground circuit apparatus for electronic equipment

Details Ground circuit apparatus for electronic equipment Ground circuit apparatus for electronic equipment

1989-01-19

1989-09-19

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

324510, 324511, 361 41, H02H 300

Patent

active

048687022

ABSTRACT:
In a ground circuit apparatus for electronic equipment according to this invention, a motor driving circuit group constituted of a drum motor, a loading motor and a capstan motor is connected with a DC power source through a power source line and a ground line to have power supplied therefrom. A signal processing circuit group constituted of a camera circuit, a logic circuit, servo circuit, video circuit and an audio circuit as well as an electronic view finder is connected with the DC power source through the power line and a ground line. A video circuit of the signal processing circuit group is connected through a ground line to a chassis which serves as a reference potential point. In addition, two diodes connected in parallel and directed in mutually opposite directions to have opposite polarities and a ground line are connected between the electronic view finder and the chassis.

REFERENCES:
patent: 4630161 (1986-12-01), Seitz
patent: 4639611 (1987-01-01), Sticher
patent: 4722021 (1988-01-01), Hornung et al.

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