1

AY: 2021 – 22

PREPARED BY : ER S. A. SAHU

BRANCH : ELECTRICAL ENGINEERING

SEMISTER: 4th

SUBJECT: AE & OPAMP

TOPIC: CLIPPER & CLAMPER CIRCUIT

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.

2

Fig 4.1-11 Clipper (limiter) circuits. (1)

3

Negative series clipper.

Fig 4.1-11 Clipper circuits. (2)

4

Positive series clipper.

Fig 4.1-11 Clipper circuits. (3)

5

Negative shunt clipper.

Fig 4.1-11 Clipper circuits. (4)

6

Positive shunt clipper.

Fig 4.1-11 Clipper circuits. (5)

7

Biased shunt clipper.

Fig 4.1-11 Clipper circuits. (6)

8

Adjustable shunt clipper.

Fig 4.12-13 Clipper applications. (1)

9

Transient-protection circuits

Fig 4.12-13 Clipper applications. (2)

10

AM detector

Fig 4.14 Clampers (DC restorers).

11

Fig 4.15 Clamper operation. (1)

12

Charge

Discharge

T_C << T_D

Example 4.5

13

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 Ω, R_L = 10kΩ, and C₁ = 1μF.

Fig 4.16 Clamper operation. (2)

14

Fig 4.17 Clamper circuits.

15

Negative clamper

Positive clamper

Fig 4.18-19 Biased clampers.

16

Biased clampers.

Fig 4.20 Voltage multipliers. (1)

17

Half-wave voltage doublers.

Fig 4.21 Voltage multipliers. (2)

18

Operation of half-wave voltage doublers.

Fig 4.23 Full-wave voltage doubler.

19

Cockcroft-Walton Circuit

20

Fig 4.28-29 Multisegment displays.

21

7-segment display

16-segment alphanumeric display

5x7 dot matrix display

Diode Logic Circuits (1)

22

AND function

Diode Logic Circuits (2)

23

OR function

Summary

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

24