| 摘要 |
This disclosure relates to a filter for use in a drive circuit for powering an electrical device such as a motor, the drive circuit including wiring connecting a drive to the device. The filter comprises at least one common mode choke including a single core and coils for connection in the wiring between the drive and the device, and capacitors connected to the wiring to reduce high frequency noise on said wiring. The common mode choke forms a low pass filter which further reduces the high frequency noise on the wiring. Where two common mode chokes are provided, one common mode choke is connected on each side of the capacitors. <IMAGE> |
