Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1979-08-17
1981-06-02
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
235 647, 354 35, 354289, 362 5, H05B 4132
Patent
active
042713765
ABSTRACT:
An improved electronic flash is provided having a selectively energizable source of illumination, control circuits for controlling the source of illumination according to a plurality of operational modes which include an automatic control mode and a manual control mode and a housing enclosing the source of illumination and the control circuits. According to a preferred embodiment of the instant invention, a frame is mounted upon an outer surface of the housing and an indicator panel may be removably mounted within the frame. The indicator panel is provided with front and rear surfaces and may be selectively mounted within the frame to externally expose either the front or rear surface thereof. One of the front or rear surfaces is provided with indicia for calculating a diaphragm value.
REFERENCES:
patent: 3742824 (1973-07-01), Ueda et al.
patent: 3956763 (1976-05-01), Yamanaka
patent: 4067024 (1978-01-01), Quinn
patent: 4080612 (1978-03-01), Maitani et al.
patent: 4205908 (1980-03-01), Quinn et al.
LaRoche Eugene R.
Olympus Optical Co,. Ltd.
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