Inventor
GANSER HANS G
DE14 patents
Patents
14 patentsUS5608294AMar 4, 1997
High pressure lamp operating circuit with suppression of lamp flicker
PHILIPS CORP117 citations93
US4471269ASep 11, 1984
Circuit arrangement for operating a high-pressure gas discharge lamp
PHILIPS CORP43 citations92
US6239556B1May 29, 2001
Long life discharge lamp operating circuit with reduced lamp flicker
PHILIPS CORP23 citations89
US6232725B1May 15, 2001
Circuit arrangement for operating a high-pressure discharge lamp
PHILIPS CORP45 citations89
US4594531AJun 10, 1986
Circuit arrangement for operating high-pressure gas discharge lamps
PHILIPS CORP22 citations81
US4705991ANov 10, 1987
Method of operating a high-pressure metal vapor discharge lamp and circuit arrangement for carrying out this method
PHILIPS CORP14 citations73
US4539513ASep 3, 1985
Circuit arrangement for starting and operating a high-pressure gas discharge lamp
PHILIPS CORP11 citations73
US6111765AAug 29, 2000
Discharge lamp operating circuit using piezoelectric transformer and protective device
PHILIPS CORP11 citations72
US6104141AAug 15, 2000
Inventer-ballast using a piezoelectric transformer
PHILIPS CORP11 citations72
US5025197AJun 18, 1991
Circuit arrangement for A.C. operation of high-pressure gas discharge lamps
PHILIPS CORP4 citations62
US4891563AJan 2, 1990
Circuit arrangement for adjusting the operating voltage of high-pressure gas discharge lamps
PHILIPS CORP6 citations62
US4839560AJun 13, 1989
Heatable electrode for high-pressure gas discharge lamps
PHILIPS CORP2 citations62
US4816721AMar 28, 1989
Circuit arrangement for operating a high-pressure gas discharge lamp
PHILIPS CORP5 citations62
US5689156ANov 18, 1997
Circuit arrangement for detecting the amount of deposited electrode material on the wall of a lamp vessel
PHILIPS CORP0 citations49