1. Bridge Rectifier Electrical Engineering and Industrical Electronics
Lecture: Wang ruifang
Office : Yifu Building 107

2. 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

3. 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

4. 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

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

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

7. The Bridge Rectifier   v ~ vo 3. Waveform 2. Working Principle io aTr 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

8. 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

9. The Bridge Rectifier

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

11. 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

12. Assignments P

13. Thank you !