Solid-state ballast for fluorescent lamp with multiple dimming

Details Solid-state ballast for fluorescent lamp with multiple dimming Solid-state ballast for fluorescent lamp with multiple dimming

1990-09-05

1992-03-31

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315117, 315118, 315309, 315DIG4, H05B 3702

Patent

active

051011425

ABSTRACT:
Dimming fluorescent lamp solid-state ballast. The ballast is adapted for automatic sensing and control of lamp temperature to dim the lamp to an optimal operating temperature, such as that at which the light output is a maximum per energy input. The ballast is also adapted for manual continuously adjustable or multi-position stepwise dimming control, which may include such an optimal setting. Other available dimming settings include undimmed or maximum light output, and/or the lamp's minimal sustainable light output.

REFERENCES:
patent: 4414493 (1983-11-01), Henrich
patent: 4441054 (1984-04-01), Bay
patent: 4463284 (1984-07-01), Tamura et al.
patent: 4523131 (1985-06-01), Zansky
patent: 4682080 (1987-07-01), Ogawa et al.
patent: 4904906 (1990-02-01), Atherton et al.

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