| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector capable of reducing a detection error and a lighting device for a discharge lamp. SOLUTION: The detector includes a detection resistance Rs serially inserted in a current supply path to a load, a resistance R1 of which one end is connected to one end of the detection resistance Rs, a resistance R2 connected to the other end of the detection resistance Rs, having a resistance value different from that of the resistance R1, a voltage regulation means 1 connected to the other end of the resistance R2, for regulating so as to equalize a voltage V1 at the other end of the resistance R1 and a voltage V2 at the other end of the resistance R2, a current regulating means 2 connected to the other end of the resistance R1, for regulating so as to equalize a current I1 flowing in the resistance R1 and a current I2 flowing in the resistance R2, wherein a detection voltage Vd of a detection output is obtained from the other end of the resistance R1. COPYRIGHT: (C)2007,JPO&INPIT |
