Photoflash array with selective pairing of lamps

Details Photoflash array with selective pairing of lamps Photoflash array with selective pairing of lamps

1980-06-06

1982-06-15

Dority, Jr., Carroll B.

Combustion

Illuminating flash device, e.g., photographic bulb, etc.

Fuel charge within sealed transparent casing, e.g., bulb

362 6, 362 15, F21K 502

Patent

active

043348564

ABSTRACT:
A photoflash lamp array having a plurality of 2n flashlamps, a common terminal connected to one lead-in wire of each of the lamps, and a plurality of n selective terminal means, each associated with a respective pair of the lamps and directly connected to the non-common lead-in wire of one lamp of each pair. A respective normally open switch is coupled between the non-common lead-in wires of each of the pairs of lamps associated with a selective terminal. Each of the switches is responsive to the flashing of the directly connected lamp of an associated pair so as to electrically connect the other lamp of the pair to the associated selective terminal. In one specific example, ten lamps are selectively paired to be operated sequentially by firing pulses successively applied to five selective terminals together with a common terminal.

REFERENCES:
patent: 4017728 (1977-04-01), Audesse et al.
patent: 4048487 (1977-09-01), Kewley

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