Title:
CIRCUIT BOARD FOR ARRANGING FLASH LAMPS FOR PHOTOGRAPHING
Document Type and Number:
Japanese Patent JPS53144730
Kind Code:
A
Abstract:
Fuse elements are used with a circuit board to provide more reliable sequential firing in a flash lamp array. The circuit board includes the lamp firing circuitry along with radiation switches connected in said circuitry and the fuse elements cooperate with said radiation switches in the circuit operation. Fuse elements are deposited on the circuit pattern adjacent to the flash lamps for actuation by radiation being emitted therefrom and the activated fuse elements interrupt the circuit path by thermal action. In a preferred embodiment, the circuit board is constructed from an organic polymer and the fuse elements are deposited at circuit locations wherein the underlying substrate has a thickness less than the substrate thickness elsewhere to produce holes in the circuit board by melting or thermal decomposition.
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Inventors:
EDOWAADO JIYOZEFU KORINZU
BOON KURIFUTON SUTEARINGU
BOON KURIFUTON SUTEARINGU
Application Number:
JP4134078A
Publication Date:
December 16, 1978
Filing Date:
April 10, 1978
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
G03B15/04; H05K1/00; H05K1/09; (IPC1-7): G03B15/04
Foreign References:
| US4017728A | 1977-04-12 | |||
| US3666394A | 1972-05-30 |