Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1995-02-21
1996-07-02
Gonzalez, Frank
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
315241S, 315241R, H05B 3700
Patent
active
055325556
ABSTRACT:
An electronic flash apparatus having a main capacitor for storing charges, a discharge light emitting tube for emitting light in accordance with the charges stored in the main capacitor, a CPU for performing camera sequence control, and an IGBT coupled to each of the discharge light emitting tube and the CPU. The CPU includes a light emission control terminal for controlling a light emission timing of the discharge light emitting tube and the CPU is supplied with a CPU operation voltage. The IGBT includes a gate terminal connected to the light emission control terminal of the CPU, a collector terminal, and an emitter terminal, wherein, responsive to the light emission control terminal inputting to the gate terminal a control voltage substantially equivalent to the CPU operation voltage, a channel is formed between the collector terminal and the emitter terminal and the charges of the main capacitor are discharged through the discharge light emitting tube.
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Gonzalez Frank
Olympus Optical Co,. Ltd.
Ratliff Reginald A.
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