NOISE SUPPRESSION CIRCUIT

摘要

A noise suppression circuit for use with a noise source connected to ground may include a first capacitor having a first terminal and a second terminal, the first terminal of the first capacitor being connected to the noise source; and a first impedance element having a first terminal and a second terminal, the first terminal of the first impedance element being connected to the second terminal of the first capacitor and the second terminal of the first impedance element being connected to the ground.

主权项

1. A noise suppression circuit for use with a motor comprising a first brush, a second brush, and a motor housing, the noise suppression circuit comprising:
a first inductor having a first terminal and a second terminal, the first terminal of the first inductor being connected to the first brush; a second inductor having a first terminal and a second terminal, the first terminal of the second inductor being connected to the second brush; a first capacitor having a first terminal and a second terminal, the first terminal of the first capacitor being connected to the second terminal of the first inductor; a second capacitor having a first terminal and a second terminal, the first terminal of the second capacitor being connected to the second terminal of the second inductor; a third capacitor having a first terminal and a second terminal, the first terminal of the third capacitor being connected to the first terminal of the first capacitor and the second terminal of the first inductor, and the second terminal of the third capacitor being connected to the first terminal of the second capacitor and the second terminal of the second inductor; and one of a group consisting of:
a first ferrite bead having a first terminal and a second terminal, the first terminal of the first ferrite bead being connected to the second terminal of the first capacitor and the second terminal of the second capacitor and the second terminal of the first ferrite bead being connected to ground; anda first ferrite bead having a first and second terminal and a second ferrite bead having a first and second terminal; the first terminal of the first ferrite beading being connected to the second terminal of the first capacitor, and the second terminal of the first ferrite bead being connected to ground; and the first terminal of the second ferrite bead being connected to the second terminal of the second capacitor, and the second terminal of the second ferrite bead being connected to ground; wherein the motor housing is connected to ground.