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yong sheng ka shi bo qi tan jiu zheng liu lv bo dian lu
Author(s): 
Pages: 38
Year: Issue:  Z1
Journal: Physics Teaching In Middle School

Keyword:  虚拟示波器 声卡 滤波电路 整流二极管 电容滤波 整流波形 探究 半波整流 线路板 桥式整流电路;
Abstract: <正>我们利用一些废旧电子元件制作了一个半波整流和桥式整流滤波电路,从网上下载了一个声卡输入虚拟示波器软件,探究半波整流、桥式整流、电容滤波及π型滤波的波形变化情况,演示时将图象投影到大屏幕上,效果非常明显.一、电路设计及元件选择如图1所示是原理电路图,图2是实际设计的线路板,图3是声卡示波器的窗口界面.变压器输入电压220 V,输出线圈为双绕组,输出电压为双12 V,可
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