Flash light discharge device

Details Flash light discharge device Flash light discharge device

1977-04-18

1979-07-31

Smith, Alfred E.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315362, H05B 3700, H05B 3900, H05B 4114

Patent

active

041631781

ABSTRACT:
In a flash discharge device including a strobe tube attached to a camera body, use is made of both the positive and negative outputs of a blocking oscillator. One output is used for charging a main capacitor to supply power to actuate the strobe tube, and the other output is used for energizing one or more indicators. Both the outputs may be used to accelerate the charging of the capacitor. The indicator energized by the output of the blocking oscillator while the main capacitor being charged may be an indicator which indicates that condition by intermittent lighting.

REFERENCES:
patent: 3526821 (1970-09-01), Thomas
patent: 3764849 (1973-10-01), Ohta
patent: 3890538 (1975-06-01), Iwata et al.
patent: 3898514 (1975-08-01), Takahashi
patent: 4068150 (1978-01-01), Iwata et al.

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