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1.发明授权公开(公告)号：US07554825B2
公开(公告)日：2009-06-30
申请号：US11607977
申请日：2006-12-04
IPC分类号： H02M3/24
CPC分类号： H02M3/335 , Y10T307/544
摘要： The invention discloses a switching power supply capable of reducing a low-frequency secondary-side common-mode voltage. The power supply mainly has two common-mode filtering circuit devices to prevent an AC voltage and an AC current from coupling to a secondary side of a transformer. Thus, the electrical safety and the quality in use of the associated electronic apparatus can be enhanced, a potential difference between the electronic apparatus and the ground may be greatly reduced, and an AC hum of a speaker coupled to an output of the power supply may be reduced or even eliminated.
摘要翻译： 本发明公开了一种能够降低低频二次侧共模电压的开关电源。 电源主要具有两个共模滤波电路装置，以防止交流电压和交流电流耦合到变压器的次级侧。 因此，可以增强电子安全性和相关联的电子设备的使用质量，电子设备和地面之间的电位差可以大大降低，并且耦合到电源的输出端的扬声器的AC嗡嗡声可以 减少甚至消除。
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2.发明申请公开(公告)号：US20070127275A1
公开(公告)日：2007-06-07
申请号：US11607977
申请日：2006-12-04
IPC分类号： H02M1/12
CPC分类号： H02M3/335 , Y10T307/544
摘要： The invention discloses a switching power supply capable of reducing a low-frequency secondary-side common-mode voltage. The power supply mainly has two common-mode filtering circuit devices to prevent an AC voltage and an AC current from coupling to a secondary side of a transformer. Thus, the electrical safety and the quality in use of the associated electronic apparatus can be enhanced, a potential difference between the electronic apparatus and the ground may be greatly reduced, and an AC hum of a speaker coupled to an output of the power supply may be reduced or even eliminated.
摘要翻译： 本发明公开了一种能够降低低频二次侧共模电压的开关电源。 电源主要具有两个共模滤波电路装置，以防止交流电压和交流电流耦合到变压器的次级侧。 因此，可以增强电子安全性和相关联的电子设备的使用质量，电子设备和地面之间的电位差可以大大降低，并且耦合到电源的输出端的扬声器的AC嗡嗡声可以 减少甚至消除。
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