163.5The Application of Diode CircuitsRectifiercircuits>Half-wave rectifier>Full-waverectifier>The peakrectifier（稳压器）Voltage regulatorLimiter(限幅器）LogicCircuits2025/11/27
2025/11/27 16 ⚫ Rectifier circuits ➢Half-wave rectifier ➢Full-wave rectifier ➢The peak rectifier ⚫ Voltage regulator (稳压器) ⚫ Limiter (限幅器) ⚫ Logic Circuits 3.5 The Application of Diode Circuits
173.5Half-Wave RectifierIdeal VpoIDDMOoCOO(a)Half-waverectifier(b)EquivalentcircuitvoRSlopeR+rpVpoOVpoUs(c)Transfercharacteristic(d) Input and output waveforms2025/11/27
2025/11/27 17 (b) Equivalent circuit 3.5 Half-Wave Rectifier (a) Half-wave rectifier (c) Transfer characteristic (d) Input and output waveforms
183.5Parameter determinationInselecting diodesforrectifierdesign,twoimportantparametersmustbespecified:>The current-handlingcapability>Thepeakinversevoltage(PIV)Itisusuallyprudent,however,toselectadiodethathasa reversebreakdownvoltageatleast50%greaterthantheexpectedPiV.2025/11/27
2025/11/27 18 3.5 Parameter determination ⚫ In selecting diodes for rectifier design, two important parameters must be specified: ➢ The current-handling capability ➢ The peak inverse voltage (PIV) ⚫ It is usually prudent, however, to select a diode that has a reverse breakdown voltage at least 50% greater than the expected PIV
193.5Full-WaveRectifierTransformerwithacenter-tapped（中心抽头）secondarywindingDATODNONOC+CenterCenterRVtaptapSlope1acSloneaclinelinevoltagevoltage-V,0 Vp4十Transfercharacteristic达DDInputandoutputwaveforms2025/11/27
+ + + + + + 2025/11/27 19 3.5 Full-Wave Rectifier • Transformer with a center-tapped （中心抽头） secondary winding Transfer characteristic Input and output waveforms
203.5The Bridge RectifierO十aclineUsCircuitRvoltage?Inputandoutputwaveforms2025/11/27
2025/11/27 20 Circuit 3.5 The Bridge Rectifier Input and output waveforms