| 摘要 |
<p>PURPOSE:To enable to remove the radio noise without fail by a method wherein a DC-DC converter, to be used to charge a battery for auxiliary machinery in synchronization with a signal to control the chopper circuit which is connected to a motor, is controlled using a noise blanker. CONSTITUTION:A chopper circuit 5 is controlled in proportion to the amount of depression of an accelerating pedal 7 through the intermediary of a PWM control circuit 6, and a motor 1 is driven by a battery 3. On the other hand, the signal of the PWM control circuit is inputted to a flip-flop 18, and the transistors 10 and 11 of the DC-DC converter 17, to be used to charge the auxiliary battery 14 using the battery 3, is controlled. Accordingly, the radio noises coming from both circuits can be generated in synchronization with the control signal of the chopper circuit 5 and the DC-DC converter 17, thereby enabling to completely remove both radio noises using a noise blanker of the radio receiver mounted on the vehicle.</p> |
