Electric lamp and discharge devices: systems – Current and/or voltage regulation
Patent
1992-07-06
1994-02-15
Pascal, Robert J.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
315307, 315278, 315224, 315219, 315324, 315205, 315119, G05F 100
Patent
active
052870405
ABSTRACT:
The present invention is directed to an electronic ballast device for the control of gas discharge lamps. The device is comprised of a housing unit with electronic circuitry and related components. The device accepts a.c. power and rectifies it into various low d.c. voltages to power the electronic circuitry, and to one or more high d.c. voltages to supply power for the lamps. Both the low d.c. voltages and the high d.c. voltages can be supplied directly, eliminating the need to rectify a.c. power. The device switches a d.c. voltage such that a high frequency signal is generated. Because of the choice of output transformers matched to the high frequency (about 38 kHz) and the ability to change frequency slightly to achieve proper current, the device can accept various lamp sizes without modification. The ballast can also dim the lamps by increasing the frequency. The device can be remotely controlled.
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patent: 4904906 (1990-02-01), Atherton et al.
patent: 4988045 (1991-03-01), Ruby
patent: 4998046 (1991-03-01), Lester
patent: 5159244 (1992-10-01), Poulson
patent: 5173643 (1992-12-01), Sullivan et al.
Glynn Kenneth P.
Lestician Ballast, Inc.
Pascal Robert J.
Philogene Haissa
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