1. Made By :- Shivani Srivastava, binal Vaghela ENROLLMENT NO: , SEM :-3rd branch :- E.C.

2. Topic :- Clippers

3. Clippers or limiters
The clipping circuits using diodes have the ability to “clip “ off or remove a portion of the input signal without distorting the remaining part of the waveform.
The diode clipper circuits can be of the following types :-
1] series clippers
2] parallel clippers

4. A series clipper circuits
SERIES NEGATIVE CLIPPER :-
The basic configuration of a series negative clipper is as shown in figure . D +
vi (input ) R(load) vo (output ) _

5. Negative cycle is clipped off
Waveforms :- vm on
Negative cycle is clipped off

6. Operation :-
The series negative clipper shown in figure is nothing but a simple half wave rectifier circuit .
In the +ve half cycle of the sinusoidal input , the diode is forward biased diode .
It acts as a closed switch and connects the load across the input .

7. The load voltage is therefore equal to the input voltage in the positive half cycle .
In the negative half cycle of the input, the diode is reverse biased and acts as an open circuited switch.
The load voltage is therefore zero during the negative
half cycle .
the negative half cycle is thus “clipped off “ by the series negative clipper .

8. SERIES POSITIVE CLIPPER :-
The basic configuration of a series positive clipper as shown in figure :- D
input voltage RL output voltage

9. POSTIVE CYCLE IS CLIPPED OFF
Waveforms :- vm
POSTIVE CYCLE IS CLIPPED OFF ON

10. Operation :-
The series positive clipper shown in figure is nothing but a simple half wave rectifier circuit .
In the +ve half cycle of the sinusoidal input , the diode is reversed biased diode .
It acts as a open switch and connects the load across the input .

11. The load voltage is therefore equal to the input voltage in the positive half cycle .
In the negative half cycle of the input, the diode is forward biased and acts as an closed circuited switch.
The positive half cycle is thus “clipped off “ by the series positive clipper .

12. A parallel clipper circuits
PARALLEL POSITIVE CLIPPER :-
In the parallel clipper circuits , the clipping diode is connected in a branch which is parallel to the load as shown in figure . R
input voltage D output voltage

13. Operation :- The parallel positive clipper shown in figure .
In the +ve half cycle of the sinusoidal input , the diode is forward biased diode .
It acts as a closed switch ,the output voltage will therefore be zero in the +ve half cycle .

14. In the negative half cycle of the input, the diode is reverse biased and acts as an open circuited switch. .
the positive half cycle is thus “clipped off “ by the series positive clipper .

15. A parallel clipper circuits
PARALLEL NEGATIVE CLIPPER :-
In the parallel clipper circuits , the clipping diode is connected in a branch which is parallel to the load as shown in figure . R
input voltage D output voltage

16. Operation :- The parallel negative clipper shown in figure .
In the -ve half cycle of the sinusoidal input , the diode is forward biased diode .
It acts as a closed switch ,the output voltage will therefore be zero in the -ve half cycle .

17. In the +ve half cycle of the input, the diode is reverse biased and acts as an closed circuited switch. .
the negative half cycle is thus “clipped off “ by the series negative clipper .

18. Thank you