Bridge Rectifier Electrical Engineering and Industrical Electronics Lecture: Wang ruifang Email : rfwang0404@163.com Office : Yifu Building 107

Review: How to obtain? AC power supply load transformer rectifier DC power supply How to obtain? AC power supply load transformer rectifier filter regulator v1 vo Rectifier Convert AC into DC

How to obtain the negative DC voltage? The Half-Wave Rectifier v t O How to obtain the negative DC voltage? – + a Tr D v o R L i b AC t vo O DC Positive DC voltage

What are the defects for the half-wave rectifier? – + a Tr D v o R L i b t vo O What are the defects for the half-wave rectifier? Negative DC voltage

The Bridge Rectifier ~ Simulation 1. Circuit a Tr vo v b D1 D4 RL D3

The Bridge Rectifier   v ~ vo 3. Waveform 2. Working Principle io a Tr RL b v D1 D2 D3 D4   vo t D1D3 on D1D3 on D1D3 on During positive half-cycle of v

The Bridge Rectifier   v ~ vo 3. Waveform 2. Working Principle io a Tr RL b v D1 D2 D3 D4 AC  vo t  DC D1D3 on D2D4 on D1D3 on D2D4 on D1D3 on During negative half-cycle of v

The Bridge Rectifier v vo 4. Calculations of parameters 3. Waveform (1) Average voltage (VO) vo t (2) Average current (IO) D1D3 on D2D4 on D1D3 on D2D4 on D1D3 on

The Bridge Rectifier

Discussion 1 vo a ~ Tr RL b v D1 D2 D3 D4

How to obtain the negative DC voltage? Discussion 2 How to obtain the negative DC voltage? vo a ~ Tr RL b v D1 D2 D3 D4 vo t

Assignments P387 8.31 8.33

Thank you !