| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving circuit for a lighting fixture, with which occurrence of differences in brightnesses of respective lamps due to variations in characteristics of respective output transformers can be prevented when a plurality of the lamps are driven by using a plurality the output transformers. SOLUTION: Primary input terminals to which AC voltage signals are inputted, of single input/multiple output transformers T1 and T2 having mutually same specifications, are connected in parallel. One of electrodes of a pair of lighting instruments 18 and 24 connected mutually in series and one of electrodes of a pair of lighting instruments 20 and 22 connected mutually in series are connected to secondary high voltage output terminals e and f of the output transformer T1, and another electrode of the pair of lighting instruments 18 and 24 and another electrode of the pair of lighting instrument 20 and 22 are connected to secondary high voltage output terminals h and g of another output transformer T2 corresponding the secondary high voltage output terminals e and f of the output transformer T1. Secondary low voltage terminals a, b, c and d of the output transformers T1 and T2 are connected to the ground. COPYRIGHT: (C)2006,JPO&NCIPI |
