Title:
【発明の名称】高圧ガス放電ランプの高速始動用制御装置
Document Type and Number:
Japanese Patent JPH11512559
Kind Code:
A
Abstract:
PCT No. PCT/DE96/00876 Sec. 371 Date May 21, 1998 Sec. 102(e) Date May 21, 1998 PCT Filed May 18, 1996 PCT Pub. No. WO97/11581 PCT Pub. Date Mar. 27, 1997A d.c. voltage source delivers the voltage at its output terminals. This voltage is converted to a higher voltage level by a d.c./d.c. converter. This higher voltage level forms the input voltage to a controlled power-supply circuit. From this, the power-supply circuit forms the supply voltage and supply current for a high-pressure gas-discharge lamp to supply it with burning energy. A control circuit is provided to control the power-supply circuit, and an ignition circuit (9) is provided for the ignition. The power-supply circuit is controlled by the control circuit so that the high-pressure gas-discharge lamp is operated with a defined overload when illumination is started. In this context, the overload is defined so as to prevent flickering or light-saddles. The overload is controlled by the control circuit as a function of the state of the high-pressure gas discharge lamp. In so doing, the control circuit takes into account the temperature of the high-pressure gas-discharge lamp, subdivided according to the temperature of the electrodes and the temperature of the gas of the high-pressure gas-discharge lamp.
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Inventors:
Robert Cologne
Application Number:
JP51228797A
Publication Date:
October 26, 1999
Filing Date:
May 18, 1996
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
H05B41/282; H05B41/24; H05B41/288; H05B41/292; H05B41/36; H05B41/38; (IPC1-7): H05B41/29
Attorney, Agent or Firm:
Toshio Yano (3 outside)