| 摘要 |
PURPOSE:To surely detect only the electric discharge of a flyback transformer by detecting the electric discharge of a gap formed between a metallic member to fix the core of the fly-back transformer and an earth potential plane. CONSTITUTION:A spark gap 12 is formed of copper foil between the earth point of the metallic member to fix the core 4 of the fly-back transformer 1, i.e., a spring 11 and the earth potential plane. Then, when the electric discharge 7 is generated between the core 4 and the case 6 of the fly-back transformer 1, the electric discharge is generated toward the spring 11 to fix the core 4, and the electric discharge is generated in a discharge tube 14, and the larger electric discharge is generated in the gap 12. The electric discharge generated in the gap 12 or the discharge tube 14 in this way is sensed by an ultraviolet ray sensor 15, and is amplified by an amplifier 16, and is supplied to a buzzer or a power switch, etc. Accordingly, the occurrence of the trouble like a fire, etc., can be prevented beforehand. |
