Electrical power supply transfer system for a camera

Details Electrical power supply transfer system for a camera Electrical power supply transfer system for a camera

1977-04-04

1978-05-23

Hix, L. T.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

354 60R, 307 66, G03B 118, H02J 700

Patent

active

040913953

ABSTRACT:
In a combination of a photographic camera with an accessory equipment such as a motor drive unit attached thereto, when the voltage of a power source or battery provided in the camera for application to an automatic exposure control circuit thereof has fallen below a satisfactory operating level, a transfer switch is automatically operated to shift the connection of the exposure control circuit from the battery of the camera to an electrical power source or battery provided in the accessory equipment.

REFERENCES:
patent: 3631257 (1971-12-01), Behr et al.
patent: 3763755 (1973-10-01), Kuramoto et al.
patent: 3853396 (1974-12-01), Ogiso et al.
patent: 3947855 (1976-03-01), Inoue et al.
patent: 4015198 (1977-03-01), Iwashita et al.
patent: 4041514 (1977-08-01), Johnson
patent: 4044268 (1977-08-01), Hammel et al.

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