Photoflash lamp array circuit board having radiation...

Details Photoflash lamp array circuit board having radiation... Photoflash lamp array circuit board having radiation...

H - Electricity

05

B

315/17, 356/8

H05B 43/02 (2006.01) G03B 15/03 (2006.01)

Patent

CA 1178646

LD 8165 PHOTOFLASH LAMP ARRAY CIRCUIT BOARD HAVING RADIATION SENSITIVE FUSE ELEMENTS ABSTRACT OF THE DISCLOSURE Improved fuse arrangement used with the circuit board to provide more reliable sequential firing in a flash lamp array. The circuit board includes a lamp firing circuitry along with radiation switches connected in said circuitry and a more reliable series connected fuse arrangement to cooperate with said radiation switches in the circuit operation. The individual fuse elements are constructed as an integral part of the lamp firing circuit pattern deposited on the circuit board at circuit locations wherein the underlying circuit board substrate has a thickness less than the substrate thickness elsewhere and desirably cooperate in raising the dielectric breakdown voltage characteristic of the fuse combination.

365805

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