Power supply circuit for camera

Details Power supply circuit for camera Power supply circuit for camera

1976-12-20

1978-11-21

Gellner, Michael L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 324 295, 340636, G03B 700, G01N 2742

Patent

active

041268741

ABSTRACT:
A power supply circuit for a camera wherein a detection circuit which detects the voltage of a power source is provided for supplying an electric power to the electric circuit of the camera only when the detected voltage is above a preset value.In the power supply circuit, the power supply is controlled by a detection output obtained after a voltage detecting action is performed in a stable condition by the detection circuit. The power source voltage is detected in a manner suitable for the characteristic of the battery employed. Further, the voltage detection is performed only momentarily to prevent unnecessary power consumption for voltage detection.

REFERENCES:
patent: 3699857 (1972-10-01), Wagner et al.
patent: 3947855 (1976-03-01), Inoue et al.
patent: 3979657 (1976-09-01), Yorksie

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