Fluorescent lamp dimmer

Details Fluorescent lamp dimmer Fluorescent lamp dimmer

1974-01-21

1976-01-27

Borchelt, Archie R.

Electric lamp and discharge devices: systems

Regulation of the control current and/or potential applied...

315158, 315291, 315DIG4, 338120, H05B 41392, G05F 108

Patent

active

039355055

ABSTRACT:
A solid state dimmer for fluorescent lights with standard (non-dimming) ballasts. Dimming is adjusted by changing the resistance in a capacitor charging circuit. Features include a trimming adjustment for eliminating flicker, a voltage regulator compensating for line voltage change, a sequential switch which allows the lamp to heat up before being dimmed, and a diode varistor, zener thyrector or the like in the charging circuit which supply additional charging current as the dimming is increased. The dimmer mounts in the same outlet box as a conventional toggle switch and can be substituted for the switch in an existing installation without changing the ballast. The dimmer is also useful for other loads requiring a variable voltage.

REFERENCES:
patent: 2345638 (1944-04-01), Sperti
patent: 2785260 (1957-03-01), Matthew
patent: 3061744 (1962-10-01), Spira
patent: 3103618 (1963-09-01), Slater
patent: 3180999 (1965-04-01), Kuykendall
patent: 3344311 (1967-09-01), Nuckolls
patent: 3361931 (1968-01-01), Vollrath
patent: 3422309 (1969-01-01), Spira et al.
patent: 3449629 (1969-06-01), Wigert et al.
patent: 3496451 (1970-02-01), Duncan

Affiliated with

Also associated with

Rating

Fluorescent lamp dimmer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluorescent lamp dimmer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescent lamp dimmer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1813825