Last-flash indicator for photoflash array

Details Last-flash indicator for photoflash array Last-flash indicator for photoflash array

1976-07-06

1977-12-20

Tomsky, Stephen J.

Illumination

Photographic lighting

Light responsive

354127, 362 13, G03B 1502

Patent

active

040644316

ABSTRACT:
A multiple lamp photoflash array of the FlipFlash type having flash-sequencing circuitry for causing the lamps to flash one at a time in response to firing pulses applied to the array. A radiation switch associated with the last lamp to be flashed causes a short circuit across the array's electrical terminals when the last lamp is flashed and actuates a last-flash indicator in the camera.

REFERENCES:
patent: 3583841 (1969-03-01), Harvey
patent: 3692995 (1972-09-01), Wagner
patent: 3728068 (1973-04-01), Cote
patent: 3935442 (1976-01-01), Hanson

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