Control of electronically generated light pulses

Details Control of electronically generated light pulses Control of electronically generated light pulses

1973-05-10

1976-03-09

Kaufman, Nathan

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315146, 315156, H05B 3900

Patent

active

039434060

ABSTRACT:
Circuits and auxiliary elements for use with a device for controlling the emission of light pulses from a flash unit, which light pulses are produced by the discharge of current pulses from a capacitor, the device including a light sensing element for receiving light produced by the flash unit and reflected from an object in the light path. One such circuit includes two zener diodes for providing threshold voltages for use in comparing the output of the light sensing element. Another such circuit compensates for nonlinearities in the response of certain components of the device.

REFERENCES:
patent: 3033988 (1962-05-01), Edgerton
patent: 3340426 (1967-09-01), Elliott
patent: 3350604 (1967-10-01), Erickson
patent: 3585442 (1971-06-01), Krusche et al.
patent: 3634725 (1972-01-01), Biber

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