The document discusses different types of diode clippers and clampers used in non-linear wave shaping. It describes series and shunt clippers, positive and negative peak clippers, clippers with reference voltages, and two-level clippers. It also discusses positive and negative clampers. Diode clippers and clampers are used to limit or clamp the output voltage within certain levels by using the nonlinear characteristics of diodes.

1. NON- LINEAR WAVE SHAPING –
Diode Clippers & Clampers
Electronic Devices and Circuits
UNIT – I
SVEC19

3. Types of Diode clippers:
Series clipper
Shunt clipper
Two Level Clipper
 Positive peak clipper
 Negative peak clipper
 Positive clipper with reference voltage
Negative clipper with reference voltage
 Positive biased clipper
 Negative biased clipper
3M Balaji, Dept. of ECE, Sree Vidyanikethan Engineering College

4. Ideal diode:
+2V +1V
+2V +3V
-2V -3V
Diode = FB (ON)
Diode = RB (OFF)
Diode = FB (ON)
+2V 0V Diode = FB (ON)
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5. Shunt clippers:
Positive peak clipper:
Case 1: When Vi = +ve; D= ON; V0= 0
Case 2: When Vi = -ve; D= OFF; V0= Vi
5

6. Positive peak clipper with reference voltage
Case 1: When Vi > VR ; Diode D= ON (short circuit); Vo = VR
Case 2: When Vi ≤ VR ; Diode D= OFF (open circuit); Vo = Vi
VR
VR
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7. Positive biased clipper:
Case 1: When Vi > VR ; Diode D= OFF (open circuit); Vo = Vi
Case 2: When Vi ≤ VR ; Diode D= ON (short circuit); Vo = VR
VR
VR
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8. Negative peak clipper:
Case 1: When Vi = +ve; D= OFF; V0= Vi
Case 2: When Vi = -ve; D= ON; V0 = 0
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9. Negative peak clipper with reference voltage
Case 1: When Vi > -VR ; Diode D= OFF (open circuit); Vo = Vi
Case 2: When Vi ≤ VR ; Diode D= ON (short circuit); Vo = -VR
-VR -VR
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10. Negative biased clipper
Case 1: When Vi > -VR ; Diode D= ON (short circuit); Vo = -VR
Case 2: When Vi ≤ -VR ; Diode D= OFF (open circuit); Vo = Vi
-VR
-VR
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11. Two level clipper:
Case 1: When Vi > VR1; D1= ON; D2=OFF; Vo = VR1.
Case 2: When –VR2 < Vi ≤ VR1; D1= OFF; D2= OFF; Vo = Vi.
Case 3: When Vi < -VR2; D1 = OFF; D2 = ON; Vo = -VR2
-VR2
VR1
-VR2VR1
0 +VR1-VR2
123
11
M Balaji, Dept. of ECE, Sree Vidyanikethan Engineering College

14. VR
VR

15. VR
-VR

16. VR
VR

17. -VR
-VR

19. Types of clampers
 Positive clamper
 Negative clamper 0V
0V
10V
-10V
0V
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20. Positive clamper: -
+
+
-
+V
-V
0
+V
+2V
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M Balaji, Dept. of ECE, Sree Vidyanikethan Engineering College

21. Negative clamper+
-
+V
-V
0
-V
-2V
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M Balaji, Dept. of ECE, Sree Vidyanikethan Engineering College