Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Plural discharge devices and/or rectifiers in the supply...
Patent
1980-02-19
1982-07-20
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Plural discharge devices and/or rectifiers in the supply...
315DIG5, 315DIG7, 315199, 315306, 315307, 315 49, 315198, H05B 3700, H05B 3900, H05B 4114
Patent
active
043408435
ABSTRACT:
A circuit for starting and ballasting a compact high intensity arc discharge lamp, and for preventing failure of the arc discharge. A filament connected in series with the arc lamp provides illumination during arc start-up and functions as a ballast during normal arc operation. An oscillatory starting circuit supplies starting voltage to the arc lamp until an operating arc is established. The circuit includes a "keep-alive" feature which prevents the arc from extinguishing during power fluctuations.
REFERENCES:
patent: Re29204 (1977-05-01), Snyder
patent: 3659146 (1972-04-01), Munson
patent: 3767970 (1973-10-01), Collins
patent: 3944876 (1976-03-01), Helmuth
patent: 4104715 (1978-08-01), Lawson, Jr.
patent: 4151445 (1979-04-01), Davenport et al.
patent: 4232252 (1980-11-01), Peil
patent: 4234822 (1980-11-01), Garrison et al.
patent: 4278916 (1981-07-01), Regan et al.
Chatmon, Jr. Saxfield
Fulmer Norman C.
General Electric Company
Jacob Fred
Schlamp Philip L.
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