| 摘要 |
PURPOSE:To prevent generation of an electromagnetic wave impairment due to a resonance current by connecting a diode in parallel with an inductance component existing in a route in which a current to a motor-driven compressor driver flows. CONSTITUTION:Since a fuse 13, an energizing relay 16, etc., of a motor-driven compressor 2 to be driven by a DC power source 3 are considerably large, they cannot be mounted on a printed board 15. Thus, wirings 14 for connecting them to the board 15 are required, and become a cause of a circuit inductance. Accordingly, a reverse resonance current remedy diode 10 is connected in parallel with the wirings 14. Thus, energy of resonance current due to a recovery current remedy capacitor 7, the wirings 14 and stray inductance 8 is absorbed by the diode 10 at rise and fall of the current of a motor-driven compressor driver 1. Therefore, the resonance current is alleviated to prevent electromagnetic wave impairment. |
