A clipper circuit uses diodes to remove parts of the waveform above or below a certain threshold. There are positive and negative clipper circuits that remove the positive or negative half of the input waveform. Biased clippers add a battery to change where the signal is clipped. A combination clipper removes parts of both halves of the input waveform. A clamper circuit adds a DC offset to an AC signal without changing its shape using a diode, capacitor, and resistor. Clampers are used to increase the wavelength of an input wave, such as in audio amplifiers.

2. • A circuit which use to remove the peak of
the wave is called clipper.
• Here blue wave is input and red is output

3. Why Clipper used
• The purpose of clippers is to protect a
circuit against too high or too low voltages.
• A simplest clipper circuit is consist of one
diode one resistance and a AC input
source.

4. Positive Clipper Circuits
• In a positive clipper, the positive half cycles of the input
voltage will be removed. The circuit arrangements for a
positive clipper are illustrated in the figure given below .

5. Negative Clipper Circuit
• The negative clipping circuit is almost same as the positive
clipping circuit, with only one difference. If the diode in figures
(a) and (b) is reconnected with reversed polarity, the circuits
will become for a negative series clipper. As below

6. Result of Positive and Negative Clipper
• In all the above discussions, the diode is considered to be ideal
one. In a practical diode, the breakdown voltage will exist (0.7
V for silicon and 0.3 V for Germanium). When this is taken into
account, the output waveforms for positive and negative
clippers will be of the shape shown in the figure below.

7. Biased Positive Clipper
• We know that the biasing is a process in which we connect a
battery with the diode. Same as here we just attach battery
with diode in clipper circuit.
• when the input signal voltage is positive, the diode ‘D’ is
reverse-biased. This causes it to act as an open-switch.

8. Biased Negative Clipper
• When the input signal voltage is negative its also reverse
biased but in this case battery voltage is more than the input
voltage so its acts like an close switch.

9. Combination Circuit
• When a portion of both positive and negative of each half
cycle of the input voltage is to be clipped (or removed),
combination clipper is employed. The circuit for such a clipper
is:

10. Clamper
• A circuit which adds DC value to an AC wave form without
changing its wave form.
• In this circuit we use a diode and a capacitor and a resistor for
measure voltage in our circuit.

11. Why Clamper use
• Clamper use to increase the wavelength of input wave.
• Like an sound system amplifier.

12. Positive clamper
• In positive clamper diode is forward biased and current flow is
maximum and so due to the capacitor it will double the
wavelength on positive side.

13. Negative clamper
• In this capacitor negatively charged and the output is the
double of the input of the negative side.