Flash array having shielded switching circuit

Details Flash array having shielded switching circuit Flash array having shielded switching circuit

1974-09-30

1976-03-02

Peters, Jr., Joseph F.

Buckles, buttons, clasps, etc.

431 95A, F21K 502

Patent

active

039419924

ABSTRACT:
A multiple flash lamp array contains a sequentially switching lamp flashing circuit in the form of a printed circuit on a surface of a circuit board. A metal shield is provided over the other surface of the circuit board to reduce the possibility of accidental flashing of lamps by electrostatic voltage, which flashing tends to occur particularly when high voltage types of lamps are used in the array. Preferably, the shield is connected electrically to a lead-in wire of each lamp in the array, and also is connected electrically to a conductive reflector member positioned near the other side of the circuit board from the shield.

REFERENCES:
patent: 2502291 (1950-03-01), Taylor
patent: 3042740 (1962-07-01), Bosworth
patent: 3458270 (1969-07-01), Ganser et al.
patent: 3608451 (1971-09-01), Kelem
patent: 3725693 (1973-04-01), Anderson et al.

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