Clipper Circuit 1:
![2451_clipper circuit.png](https://www.expertsmind.com/CMSImages/2451_clipper%20circuit.png)
The circuit shown in the figure 1, clips input signal above the reference voltage (VR).
In this clipper circuit,
If vi < VR, diode is reversed biased and does not conduct. Therefore, vo = vi
and, if vi > VR, diode is forward biased and thus, vo= VR.
The transfer characteristic of the clippers is shown in figure 2.
![2046_clipper circuit1.png](https://www.expertsmind.com/CMSImages/2046_clipper%20circuit1.png)
Figure 2
Clipper Circuit 2:
![650_clipper circuit2.png](https://www.expertsmind.com/CMSImages/650_clipper%20circuit2.png)
The clipper circuit shown in the figure 3 clips the input signal below the reference voltage VR.
In this clipper circuit,
If vi > VR, diode is reverse biased. vo = vi
and, If vi < VR, diode is forward biased. vo = VR
The transfer characteristic of circuit is shown in the figure 4
![158_clipper circuit3.png](https://www.expertsmind.com/CMSImages/158_clipper%20circuit3.png)
Figure 4
Clipper Circuit 3:
To clip the input signal between two independent levels
![944_clipper circuit4.png](https://www.expertsmind.com/CMSImages/944_clipper%20circuit4.png)
(VR1< VR2 ), the clipper circuit is shown in figure 5. The diodes D1 & D2 are supposed to be ideal diodes. For this clipper circuit, when vi ≤ VR1, vo=VR1 and, vi ≥ VR2, vo= VR2
and, VR1 < vi < VR2 vo = vi
The transfer characteristic of clipper is shown in the figure 6.
![213_clipper circuit5.png](https://www.expertsmind.com/CMSImages/213_clipper%20circuit5.png)
Figure 6
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