CLIPPERS AND CLAMPERS IN ELECTRONICS PDF
In electronics, a clipper is a circuit designed to prevent the output from exceeding a . A clamper circuit is not a clipper, but the simple diode version has a similar topology to a clipper with the exception that the resistor is replaced with a. Complete tutorial about different types and applications of clipper circuits in series and parallel; positive and negative clamper circuits, etc. A clipper circuit chops of output voltage beyond the requirement while clamper clamps the output to a definite voltage level, actually adds/subtracts a DC level.
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The operating principles of the shunt clipper are nearly opposite to the series clipper. So, it is essential to protect the electronics devices.
The series clipper passes the clamprrs signal to the output load when the diode is forward biased and blocks the input signal when the diode is reverse biased. Therefore, no signal appears at the output.
Clipper Circuits – Series Clipper, Shunt Clipper, and Dual Clipper
The protection of the electronic devices can be achieved by using the clipper circuits. The clipping removal of the input AC signal is done in such a way that the remaining part of the input AC signal will not be distorted. We know that a clipper either clips a portion of half cycle or clips a complete half cycle. The simple circuit clips at zero voltage or to be more precise, at the small forward voltage of the forward biased diode but the clipping voltage can be set to any desired value with the addition of a reference voltage.
So the diode is forward biased by the battery voltage V B. Shunt negative clipper with negative bias During the positive half cycle, the diode is reverse biased by both input supply voltage V i and battery voltage V B. During the negative half cycle, terminal A is negative and terminal B is positive. Thus, a series positive clipper removes the series of positive half cycles.
The linear elements used in the clippers include resistors and the non-linear elements used in the clippers include diodes or transistors. Unsourced material may be challenged and removed.
Clippers are often referred to as voltage limiters, current limiters, slicers, or amplitude selectors. This can be improved by replacing the lower resistor with a zener diode with a breakdown ahd equal to the required reference voltage.
Therefore, no signal appears at the output during the positive half cycle.
So the positive half cycle is allowed at the output. However, when the input supply voltage V i becomes greater than the battery voltage V Bthe diode D is forward biased by the input supply voltage V i. In simple words, in a series negative clipper, the diode is connected in a direction opposite to that of the series positive clipper. Initially, the input supply voltage V i is less than the battery voltage V B.
During the negative half cycle, the diode is forward biased by both input supply voltage V i and battery voltage V B. So the diode is forward biased by both battery voltage V B and input supply electrobics V i. During the positive half cycle, the diode is forward biased by both input supply voltage V i and battery voltage V B.
Therefore, the diode D is reverse biased during the positive half cycle. Let us consider a dual clipper circuit in which a sinusoidal ac voltage is applied to the input terminals of the circuit.
The orientation decides which half cycle is affected by the clipping action. When the input supply voltage V i becomes greater than the battery voltage V Bthe diode is forward biased and allows electric current. Negative peak clipping at a positive voltage. The construction of the series positive clipper with bias is almost similar to the series positive clipper. As a result, the complete positive half cycle appears at the output.
Clipping changes the shape of the waveform and alters its spectral components. In other words, a series of negative half cycles are removed at the output.
As a result, the signal does not appear at the output. Series negative clipper with positive bias During positive half cycle: A half wave rectifier removes either the positive half cycle or negative half cycle of the input AC signal and allows the remaining half cycle of the input AC signal.
Clipping circuits are also called slicers or amplitude selectors. Therefore, the diode D 1 and diode D 2 are reverse biased by the battery voltage. A simple diode clipper can be made with a diode and a resistor. During the negative half cycle, the diode is reverse biased by the input supply voltage and forward i by the battery voltage.