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    • 16. 发明授权
    • Noise filter mounting structure
    • 噪音过滤器安装结构
    • US07382216B2
    • 2008-06-03
    • US10555674
    • 2004-09-27
    • Kenichi SaitoHisato OshimaTakaaki OoiToshinori MurakamiYoshimi Tanaka
    • Kenichi SaitoHisato OshimaTakaaki OoiToshinori MurakamiYoshimi Tanaka
    • H03H7/01
    • H01G4/35H01F17/06H01F27/40H01F2017/065H01G4/40H03H1/0007H05K1/0243H05K1/18H05K2201/1006H05K2201/10969
    • A noise filter includes 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 includes 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. The impedance of the ground side input terminal seen from the ground side output electrode is larger than both the impedance of the ground side output terminal seen from the ground side output electrode and the impedance of the hot side output terminal seen from the ground side output electrode. For this purpose, a stray capacitance formed between the ground side input electrode and the ground side output electrode is reduced by increasing a gap therebetween. Accordingly, excellent noise-reducing characteristics are provided.
    • 噪声滤波器包括具有热侧输入端子,热侧输出端子,接地侧输入端子和接地侧输出端子的电容器。 电路板包括连接到热侧输入端子的热侧输入电极,连接到热侧输出端子的热侧输出电极,连接到接地侧输入端子的接地侧输入电极和连接到接地侧输出端子的接地侧输出电极 到地侧输出端子。 从地侧输出电极看到的接地侧输入端子的阻抗大于从接地侧输出电极看到的接地侧输出端子的阻抗和从接地侧输出电极看到的热侧输出端子的阻抗 。 为此,通过增加接地侧输入电极和接地侧输出电极之间的间隙而减小形成的杂散电容。 因此,提供优异的降噪特性。