1. 1 Chapter 4 Common Diode Applications Clippers, Clampers, Voltage Multipliers, Displays, and Logic Circuits By jashvir chhikara

2. 2 Objectives State the purposes served by clippers, clampers, and voltage multipliers. Describe the operation of series and shunt clippers. Describe the effects of negative and positive clampers on an input waveform. Describe the use of the LED in multisegment displays. Study simple diode logic circuits.

3. 3 Fig 4.1-11 Clipper (limiter) circuits. (1) Negative series clipper.

4. 4 Fig 4.1-11 Clipper circuits. (2) Positive series clipper.

5. 5 Fig 4.1-11 Clipper circuits. (3) Negative shunt clipper.

6. 6 Fig 4.1-11 Clipper circuits. (4) Positive shunt clipper.

7. 7 Fig 4.1-11 Clipper circuits. (5) Biased shunt clipper.

8. 8 Fig 4.1-11 Clipper circuits. (6) Adjustable shunt clipper.

9. 9 Fig 4.12-13 Clipper applications. (1) Transient-protection circuits

10. 10 Fig 4.12-13 Clipper applications. (2) AM detector

11. 11 Fig 4.14 Clampers (DC restorers).

12. 12 Fig 4.15 Clamper operation. (1) ChargeDischarge T C << T D

13. 13 Example 4.5 Determine the capacitor charge and discharge times for the circuit represented in Fig. 4.15. Assume that the forward resistance of the diode (R D1 ) is 10 , R L = 10k , and C 1 = 1  F.

14. 14 Fig 4.16 Clamper operation. (2)

15. 15 Fig 4.17 Clamper circuits. Negative clamperPositive clamper

16. 16 Fig 4.18-19 Biased clampers. Biased clampers.

17. 17 Fig 4.20 Voltage multipliers. (1) Half-wave voltage doublers.

18. 18 Fig 4.21 Voltage multipliers. (2) Operation of half-wave voltage doublers.

19. 19 Fig 4.23 Full-wave voltage doubler.

20. 20 Cockcroft-Walton Circuit

21. 21 Fig 4.28-29 Multisegment displays. 7-segment display 16-segment alphanumeric display 5x7 dot matrix display

22. 22 Diode Logic Circuits (1) V1V1 V2V2 VoVo 0V 0.7V 0V5V0.7V 5V0V0.7V 5V AND function

23. 23 Diode Logic Circuits (2) V1V1 V2V2 VoVo 0V 5V4.3V 5V0V4.3V 5V 4.3V OR function

24. 24 Summary Clippers (limiters). Clipper applications. Clampers (dc restorers). Voltage multipliers. LED applications. Diode logic circuits.