Energy saving means reducing power used by lamps

Details Energy saving means reducing power used by lamps Energy saving means reducing power used by lamps

1975-12-15

1978-06-27

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315194, 315208, 315246, 315291, 315DIG4, H05B 3909

Patent

active

040977820

ABSTRACT:
Energy is saved in lighting lamps by pulse operation at periodic duty cycles of less than 100% on time with little effect on apparent brightness when viewed by the normal human eye because of the quality of retention of a peak flask for a finite time. At periodic frequencies above about fourteen cycles the lamps appear to be continuously energized with little flicker.

REFERENCES:
patent: 3619716 (1971-11-01), Spira et al.
patent: 3648106 (1972-03-01), Engel et al.
patent: 3671804 (1972-06-01), Church
patent: 3691404 (1972-09-01), Swygert, Jr.
patent: 3885197 (1975-05-01), Moses
patent: 3909668 (1975-09-01), Laakmann et al.

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