Long life incandescent switching system

Details Long life incandescent switching system Long life incandescent switching system

1977-07-14

1979-03-13

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

315136, 315208, 315282, 323 6, 328 8, 361 2, H05B 3900

Patent

active

041444779

ABSTRACT:
A supply and switching system for incandescent indicator lights is disclosed. A solid-state AC switch is used in conjunction with a current-limiting-transformer supply. The use of the current-limiting transformer protects the solid-state switch from the large current transients that are sometimes caused by failures in incandescent bulbs.

REFERENCES:
patent: 2445088 (1948-07-01), Schilling
patent: 3524986 (1970-08-01), Harnden
patent: 3663950 (1972-05-01), Bartlett

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