Patent ID: 7064495
Filing Date: 2006-06-20
Classification: H05B

Abstract:
1. An electronic circuit for supplying energy to a high-pressure gas-discharge lamp (H, 65 , 75 ), wherein the electronic circuit comprises a line-supply input section ( 62 , 72 ) to receive and convert an a.c. voltage from an a.c. line-supply system ( 61 , 71 ), an energy storage means ( 63 , 73 ) to store the energy put out by the line-supply input section ( 62 , 72 ), and a lamp-current regulating unit ( 64 , 74 ) that is supplied with an input voltage (U 1 ) by the line-supply input section ( 62 , 72 ) via the energy storage means ( 63 , 73 ) and that makes available a lamp current (I 2 ) for a high-pressure gas-discharge lamp (H, 65 , 75 ), characterized in that the lamp-current regulating unit ( 64 , 74 ) has a power section (L, D, C, S, A 1 , A 2 , K, S D , IV) having a transconductive property that, in the event of the input voltage (U 1 ) dropping, automatically causes a reduction in the lamp current (I 2 ) supplied to the high-pressure gas-discharge lamp ( 65 , 75 , H).