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Archive for the ‘clipping and clamping circuits’Category

Comparison Between Half-Wave and Full-Wave Voltage Doublers

Half-Wave Voltage Doubler Availability of common point between input and output lines for earthing – Yes, available Ripple Content – High Ripple Frequency – Supply Frequency Voltage Regulation – Poor Maximum Voltage Across Each Capacitor – 2 Vs max PIV Rating Of Each Diode – 2 Vs max Full-Wave Voltage Doubler Availability of common point between input and output lines for earthing – No, not available Ripple Content – Low Ripple Frequency – Twice Supply Frequency Voltage Regulation – Better than that of half-wave voltage doubler Maximum Voltage Across Each Capacitor – Vs max PIV Rating Of Each Diode –…

Voltage Multipliers

Voltage multiplier is a modified capacitor filter circuit that delivers a dc voltage twice or rnore times of the peak value (amplitude) of the input ac voltage. Such power supplies are used for high-voltage and low-current devices such as cathode-ray tubes (the picture tubes in TV receivers, oscilloscopes and computer display). Here we will consider half-wave voltage doubler, full-wave voltage doubler and voltage tripler and quadrupler. Half-Wave Voltage Doubler The circuit of a half-wave voltage doubler is given in figure shown below. During the positive half cycle of the ac input, voltage, diode D1 being forward biased conducts (diode D2…

Diode Clamping Circuits

Diode Clamping Circuit In this article, the working of a clamping circuit is explained. The working of different clamping circuits like positive and negative clamper, with circuit diagrams and waveforms are given below. Related Articles CLIPPING CIRCUITS DIODE CLIPPERS DIODE CLIPPERS – APPLICATIONS TRANSISTOR CLIPPING CIRCUITS A clamping circuit is used to place either the positive or negative peak of a signal at a desired level. The dc component is simply added or subtracted to/from the input signal. The clamper is also referred to as an IC restorer and ac signal level shifter. In some cases, like a TV receiver,…

Transistor Clipping Circuits

Transistor Clipping Circuits In this article, the transistor clipping circuits is explained in detail along with the circuit diagrams and waveforms. The transistor clipper circuit waveform for ramp and sinusoidal input is given below. Related Articles CLIPPING CIRCUITS DIODE CLIPPERS DIODE CLIPPERS – APPLICATIONS DIODE CLAMPING CIRCUITS The transistor has two types of linearities —One linearity happens when the transistor passes from cut-in region to the active region. The other linearity occurs when the transistor passes from the active region to the saturation region. When any input signal passes through the transistor, across the boundary between cut-in region and active…

Diode Clippers – Applications

Application of Diode Clipper In this article, all the applications of diode clipper is explained in detail. Related Articles CLIPPING CIRCUITS DIODE CLIPPERS TRANSISTOR CLIPPING CIRCUITS DIODE CLAMPING CIRCUITS There are numerous applications for diode clippers. They find wide application in television receiver for separating synchronizing signals from composite picture signals and also in television transmitters at the time of processing the picture signals. They are also employed for different wave generation such as trapezoidal, square or rectangular waves. Series clippers are employed as noise limiters in FM transmitters by clipping excessive noise peaks above a specified level. The diode…