| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiple light lamp load monitor capable of improving abnormality detecting precision. SOLUTION: An electric current detection means 100 detects a lamp electric current flowing in a multiple light lamp load. An analog/digital conversion means 3 outputs a digital electric current detection signal analog/digital converting a detected electric current. A core-breaking detection means 4a-1 monitors the digital electric current detection signal and detects core breaking of the multiple light lamp load. A changing means 200 changes a lamp electric current range which the analog/digital conversion means 3 can convert in accordance with specification information of the multiple light lamp load.
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