Clipper and clamper

Definition: Clamper circuits are the electronic circuits that shift the dc level of the AC signal. Clampers are also known as DC voltage restorers or level shifter. Clampers are basically classified as positive and negative that includes both biased and unbiased conditions individually. These circuits are used to clamp an input signal to a different dc level. It basically adds dc component to the applied input signal in order to push the signal to either the positive or negative side. Clamper circuit is a combination of a resistor along with a diode and capacitor. It sometimes also employs dc battery so as to have an additional shift in the signal level. Clamper circuits are constructed in a similar manner as that of Operating principle of Clamper circuits As we have already discussed a clamper consist of the capacitor and a diode in shunt connection with the load. The working of clamper circuits depends on the variation in the time constant of the capacitor. This variation is the outcome of changing the current path of the diode with the change in input signal polarity. Here, the magnitude of the time constant is τ= RC this is chosen large enough in order to assure that voltage across the capacitor does not discharge consequently at the non-conducting interval of the diode. But, such a discharge takes place only when the load resistance is very large. This permits the capacitor to take larger discharge time. Conversely, a smaller value of the capacitor is chosen so that i...

Definition: Clipper circuits are the circuits that clip off or removes a portion of an input signal, without causing any distortion to the remaining part of the waveform. These are also known as clippers, clipping circuits, limiters, slicers etc. Clippers are basically wave shaping circuits that control the shape of an output waveform. It consists of linear and non-linear elements but does not contain energy storing elements. The basic operation of a diode clipping circuits is such that, in forward biased condition, the diode allows current to pass through it, clamping the voltage. But in reverse biased condition, no any current flows through the diode, and thus voltage remains unaffected across its terminals. Clipper circuits are basically termed as protection devices. As electronic devices are voltage sensitive and voltage of large amplitude can permanently destroy the device. So, in order to protect the device clipper circuits are used. Usually, clippers employ Classification of Clipper circuits Clippers are basically classified in the following categories: • Series positive Clipper circuit Let’s have a look at the circuit diagram of a series positive clipper. Here, the diode is connected in series with the output thus it is named so. The positive half of the input waveform reverse biases the diode. Thus it acts as an open switch and all the applied input voltage drops across the diode. Resultantly providing no output voltage for positive half of the input waveform. For...

Question 1 Don’t just sit there! Build something!! Learning to mathematically analyze circuits requires much study and practice. Typically, students practice by working through lots of sample problems and checking their answers against those provided by the textbook or the instructor. While this is good, there is a much better way. You will learn much more by actually building and analyzing real circuits, letting your test equipment provide the “answers” instead of a book or another person. For successful circuit-building exercises, follow these steps: • Carefully measure and record all component values prior to circuit construction, choosing resistor values high enough to make damage to any active components unlikely. • Draw the schematic diagram for the circuit to be analyzed. • Carefully build this circuit on a breadboard or other convenient medium. • Check the accuracy of the circuit’s construction, following each wire to each connection point, and verifying these elements one-by-one on the diagram. • Mathematically analyze the circuit, solving for all voltage and current values. • Carefully measure all voltages and currents, to verify the accuracy of your analysis. • If there are any substantial errors (greater than a few percent), carefully check your circuit’s construction against the diagram, then carefully re-calculate the values and re-measure. When students are first learning about semiconductor devices, and are most likely to damage them by making improper conn...

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Clamper Circuit – Positive and Negative Clampers with Biasing Operation A Clamper circuit is used for adding a DC shift to an AC signal. It does not distort the shape of the signal but only shifts the amplitude of the signal. In this article, types of clamper circuit and their working is explained with input-output waveforms. Table of Contents • • • • • • • • • • • • Clamper Circuit A clamper circuit is also known as a clamping circuit is an electronic circuit that shifts the DC level of a signal without changing the shape of its waveform. It moves the whole signal either up or down about the reference level. Unlike the clipper circuit, it does not change or distort the shape of the waveform. It simply adds or subtracts the DC level from the waveform to shift the waveform up or below the 0V reference line. Working of Clamper Circuit The idea behind the clamper circuit is to add the DC component to shift the waveform above the 0v line or subtract the DC component to shift the waveform below the –v line. This DC component is introduced into the circuit by utilizing a capacitor (which is the main component of a clamper circuit apart from diode and resistor). The capacitor store the charge in one half-cycle and discharges in another half cycle where it adds to the input signal and shifts the DC level of the whole signal. Related Posts: • • Type of Clampers The clamper circuit can be designed in the following types. • Positive Clamper • Negative Clamper Positive Clamper In a po...