Patent ID: 8378761
Filing Date: 2013-02-19
Classification: H03H

Abstract:
1. A filtering unit comprising: an insulation tube; an inductance component received in the insulation tube, the inductance component comprising a magnetic cylinder and a conductive coil fitting around and insulated from the magnetic cylinder; a first conductive cover detachably mounted to a first end of the insulation tube, and electrically contacting with a first end of the conductive coil; a second conductive cover detachably mounted to a second end of the insulation tube; and a capacitance component comprising a metal inner tube fitting around the insulation tube, and a metal outer tube insulated from and fitting around the metal inner tube, at least one first contacting end perpendicularly projecting from an inner wall of the metal inner tube and passing through the insulation tube to contact with the first conductive cover; at least one second contacting end perpendicularly projecting from an inner wall of the metal outer tube and passing through the insulation tube to contact with the second conductive cover without contacting with the metal inner tube; wherein a second end of the conductive coil passes through the insulation tube and the capacitance component to be grounded, without electrically contacting with the capacitance component; the first and second conductive covers of the filtering unit function as an input terminal and an output terminal, respectively.