文档介绍:模拟电子技术基础模拟电子技术基础 Fundamentals of Analog Electronics 讲授:曾军讲授:曾军电力学院电力学院 Email Email : : ******@scut. ******@scut. QQ: 747676440 QQ: 747676440 786934576 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. South China University of Technology 模拟电子技术模拟电子技术讲授:曾军讲授:曾军下页上页首页 直流稳压电源的组成和功能直流稳压电源的组成和功能 整流电路整流电路 滤波电路滤波电路 稳压二极管稳压电路稳压二极管稳压电路 串联型稳压电路串联型稳压电路 并联型稳压电路并联型稳压电路 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. South China University of Technology 模拟电子技术模拟电子技术讲授:曾军讲授:曾军下页上页首页电源变压器: 将交流电网电压 u 1变为合适的交流电压 u 2。整流电路: 将交流电压 u 2变为脉动的直流电压 u 3。滤波电路: 将脉动直流电压 u 3转变为平滑的直流电压 u 4。稳压电路:清除电网波动及负载变化的影响,保持输出电压 u o 的稳定。 直流稳压电源的组成和功能整流电路滤波电路稳压电路整流电路滤波电路稳压电路 u 1u 2u 3u 4u o Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. South China University of Technology 模拟电子技术模拟电子技术讲授:曾军讲授:曾军下页上页首页整流电路的任务是利用二极管的单向导电性, 把正、负交变的 50Hz 电网电压变成单方向脉动的直流电压。 整流电路本讲主要介绍半波整流电路、全波整流电路、桥式全波整流电路这三种单相整流电路,参照单相整流电路可得三相整流电路。 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. South China University of Technology 模拟电子技术模拟电子技术讲授:曾军讲授:曾军下页上页首页+ + + + 1 2 L + u R - L 1 u 2 u 220V D一、半波整流电路二极管导通, u L=u 2 ,u D =0 二极管截止, u L =0 ,u D = u 2 +– i o+ –u 2 >0 时:u 2 <0 时: u 2u Lu D ?t?2?3?4? 0 Eva