Patent ID: 6057650
Filing Date: 2000-05-02
Classification: H05B,Y02B

Abstract:
An input circuit arrangement of a starter device, the starter device being a part of a high-pressure gas discharge lamp, comprising:a starter transformer including a primary winding receiving a power supply voltage having a first value and a secondary winding starting the high-pressure gas discharge lamp with a second value of the power supply voltage, the second value being higher than the first value;a controllable switch;a first capacitor arranged parallel to a series circuit arrangement, the series circuit arrangement including the primary winding and the controllable switch, the primary winding being connected in series with the controllable switch, the first capacitor positioned on a primary side of the starter transformer, the first capacitor being charged when the power supply voltage is turned on, and the first capacitor being discharged by switching the controllable switch when the power supply voltage reaches a predetermined voltage; andan arrangement including at least one of a second capacitor and a protective element,wherein the input circuit arrangement is positioned between a first input terminal of the starter device and a second input terminal of the starter device,wherein the input circuit arrangement provides protection for the starter device and a power supply circuit arrangement, the power supply circuit arrangement delivering the power supply voltage, andwherein an elevated direct voltage is applied to the first and second input terminals for starting the high-pressure gas discharge lamp.