Flashlight lamp circuit with automatic light adjustment

Details Flashlight lamp circuit with automatic light adjustment Flashlight lamp circuit with automatic light adjustment

2006-09-12

2006-09-12

Philogene, Haissa (Department: 2828)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

C315S20000A, C315S2090CD, C315S149000, C315S291000, C396S161000, C396S167000, C396S187000

Reexamination Certificate

active

07106007

ABSTRACT:
A flashlight lamp circuit with automatic light adjustment includes a flashlight charging unit for controlling charging of a main capacitor, a flashlight activation unit activating the flashlight lamp to project a flashlight on the photographed object according to a flashlight control signal, a light sensor receiving and converting a light from the photographed object into an electric signal, an integral circuit receiving the electric signal and having an adjustable circuit resistance. When the amount of flashlight reaches a required light exposure, the flashlight control unit extinguishes the flashlight lamp.

REFERENCES:
patent: 4153355 (1979-05-01), Ikawa et al.
patent: 4363542 (1982-12-01), Kondo et al.
patent: 4457601 (1984-07-01), Kondo et al.
patent: 4469989 (1984-09-01), Takematsu
patent: 4494851 (1985-01-01), Maida et al.
patent: 5384611 (1995-01-01), Tsuji et al.

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