Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural load device systems
Patent
1980-08-01
1982-07-13
La Roche, Eugene
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Plural load device systems
315101, 315106, 315189, 315228, 315240, 315DIG5, H05B 4114
Patent
active
043396909
ABSTRACT:
Energy-saving circuitry for a rapid-start fluorescent lighting system includes a reactance-modifying capacitor coupled in series with first and second fluorescent lamps and includes a filament switch which is operative to conduct filament heating current during starting of the first lamp. The filament switch is coupled between filaments at opposite ends of the first fluorescent lamp and triggers to a low impedance state in response to the lamp starting voltage. A capacitor bypass switch can be coupled in parallel with the reactance-modifying capacitor to reduce the impedance of the series circuit during lamp starting.
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Buhrer Carl F.
Cogan Adrian
Regan Robert J.
GTE Laboratories Incorporated
La Roche Eugene
Yeo J. Stephen
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