Low pressure discharge lamp apparatus

Details Low pressure discharge lamp apparatus Low pressure discharge lamp apparatus

1991-08-30

1993-02-16

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315208, 315209R, 315224, H05B 3702, H05B 4136

Patent

active

051874130

ABSTRACT:
A low pressure discharge lamp apparatus has a low pressure discharge lamp with an arc tube. The arc tube has a first end and a second end, each with electrodes which define a discharge space therebetween. A mercury/rare gas is sealed in the arc tube. The low pressure discharge lamp apparatus further has a lighting circuit apparatus for lighting the lamp by supplying a current with a polarity reversed for each half cycle to electrodes in the first and second ends of the arc tube. The lighting circuit apparatus supplies, to the lamp, a current whose waveform has a flat peak for each half cycle and a maximum current value of the current is restricted to less than a level in which the excitation of mercury atoms is saturated.

REFERENCES:
patent: 3679928 (1972-07-01), Johnson
patent: 3789266 (1974-01-01), Polman et al.
patent: 4001633 (1977-01-01), van Tongeren et al.
patent: 4112331 (1978-09-01), Verbeek et al.
patent: 4260932 (1981-04-01), Johnson

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