1. Diode Circuits

2. Voltage Regulation Rectifier Circuit

3. T in Half-Wave Rectifier Cause of ripple: the capacitor is discharged for almost an entire period.

4. inversion Ripple Reduction: Do not allow the capacitor to discharge so frequently

5. An Inverting Half-Wave Rectifier If V in >0, D1 and D2 are off. If V in 0.

6. An Non-Inverting Half-Wave Rectifier If V in >0, D1 and D2 are on, Vout>0. If V in <0, D1 and D2 are off.

7. Full-Wave Rectifier Inverting Non-Inverting

8. Full-Wave Rectifier Alternative Drawing Inverting Non-Inverting Full-Wave A.K.A. Bridge Rectifier

9. Using Constant Voltage Diode Model V out =-V in -2V D, on V out =V in -2V D, on

10. Input versus Output |V in |<2V D,on

11. Addition of the Smoothing Capacitor

12. Modification of Ripple Estimation Formula Modification: 1.Turn-on voltage 2.1/2 to account for inversion of negative peaks.

13. Maximum Reverse Voltage V B =V D,on V A =V P V AB =V P -V D,on Maximum reverse voltage is approximately V p V p is the amplitude of V in

14. Compare Maximum Reverse Bias Voltage to Half-Wave Rectifier A reverse diode voltage must sustain larger reverse bias voltage

15. Currents as a function of time

16. Application of Bridge Rectifier

17. Summary

18. Application of Limiting Circuits Limit the signal amplitude at a suitable point in the receiver

19. Characteristic of a Limiting Circuit

20. A Simple Limiter

21. General Limiter Circuit

22. Application of Voltage Doubler Electronic systems typically provide a global supply voltage: 3V Design of some circuits will be simplified if they from a higher supply voltage.

23. Voltage Doubler Floating CapacitorCapacitor Divider

24. Capacitor Diode Circuit Ideal diode. Vout pinned to 0 V Positive charges begin to leave the left Plate of C1, turning D1 off. C1 is now a floating capacitor

25. Generating 0 to 2Vp Waveform

26. Peak Detector

27. Voltage Doubler Peak Detector0 to 2Vp waveform

28. Diode as a Voltage Shifter Application: We may need to shift the average level of a signal up and down because the subsequent stage (e.g. an amplifier) may not operate properly with the present dc level.

29. A Simple Level Shift

30. Shift up the DC by 2 V D, On

31. A simple electronic switch CK is 1: I1=1, diodes are shorted, and Vin=Vout. CK is 0,diodes are off, charges are stored across C1.