Switching power supply circuit
一种开关电源电路、整流电路的技术,应用在高效电力电子转换、电气元件、输出功率的转换装置等方向,能够解决产生蜂鸣声等问题,达到抑制蜂鸣声、抑制噪声的效果
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[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0018] figure 1 It is a configuration diagram of a switching power supply circuit according to an embodiment of the present invention. The switching power supply circuit 101 includes a first rectification circuit 102 , a switching transformer 103 , a switching operation unit 20 , a second rectification circuit 30 and a control circuit 40 , and the switching power supply circuit 101 generates a direct current output power DC from an alternating current input power AC. In addition, the switching power supply circuit 101 is configured so that the operation mode of the switching power supply circuit 101 can be switched between the standby mode and the normal operation mode.
[0019] The first rectification circuit 102 rectifies, for example, commercial power input, that is, input power AC, converts it into direct current, and outputs it.
[0020] The switching transform...
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