Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1991-05-13
1992-04-07
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315308, 315224, 315DIG7, H05B 4136, H05B 3702
Patent
active
051031426
ABSTRACT:
In a circuit arrangement for ignition and operation of a high pressure gas discharge lamp (GEL) for motor vehicles include: a desired power value determining device (LS) coupled to a first input of an integrating comparator (K) whose second input is coupled to an output of a multiplier; a switching device (S) which couples either a phase comparator or the integrating comparator (K) with a voltage control oscillator; and a status recognition device (ST), coupled with a current measuring device, for controlling the switching device which when the high pressure gas discharge lamp is not ignited couples the oscillator with the phase comparator and which when the high pressure gas discharge lamp is ignited couples the oscillator with the integrating comparator.
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Dinh Son
Hella KG & Hueck Co.
LaRoche Eugene R.
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