Patent ID: 7382216
Filing Date: 2008-06-03
Classification: H01F,H01G,H03H,H05K

Abstract:
1. A mounting structure comprising: a noise filter including a capacitor having a hot side input terminal, a hot side output terminal, a ground side input terminal, and a ground side output terminal; a circuit board including a hot side input electrode connected to the hot side input terminal, a hot side output electrode connected to the hot side output terminal, a ground side input electrode connected to the ground side input terminal, and a ground side output electrode connected to the ground side output terminal; and an impedance increaser arranged to increase the impedance of the ground side input terminal seen from the ground side output electrode to be larger than the impedance of the ground side output terminal seen from the ground side output electrode such that a noise signal transmitted from the ground side output terminal to the ground side output electrode is grounded and is prevented from being transmitted to the ground side input terminal via the ground side input electrode, and to increase the impedance of the ground side input terminal seen from the ground side output electrode to be larger than the impedance of the hot side output terminal seen from the ground side output electrode such that a noise signal generated at the hot side output electrode is grounded to the ground side output electrode via a stray capacitance between the hot side output electrode and the ground side output electrode.