The frequency of the sine wave generated by the above circuit depends on the components R1, R2, C1 and C2 and the equation for the frequency is given below:įor the ease of adjusting the amplitude of the wave to obtain proper sinusoidal sweep, a coarse and fine adjustment has been implemented using potentiometers. The frequency of the above circuit can be varied by simply varying the potentiometer R2 and the amplitude of the waveform can be adjusted by varying the potentiometer R. 3: Circuit of Variable Frequency Sine Wave Oscillator on Breadboard 2: Circuit Diagram of Variable Frequency Sine Wave Oscillatorįig. The circuit diagram of the variable frequency sine wave oscillator is shown in the following:įig. The circuit used here to generate the sine wave based on Wien Bridge has both the frequency and amplitude adjustments. The Wien Bridge is a circuit which can generate the pure sine wave with minimum distortion. Here the positive and negative clipping of a sine wave is demonstrated with the help of a Wien Bridge oscillator circuit which can generate a sine wave. The positive or negative clipping of a sine wave can be achieved by using a single diode only. 1: Clipping of Sine Wave using both Positive and Negative Clipping Devices The following figures represent the clipping of a sine wave using both the positive and negative clipping devices.įig. Simply using the technique of clipping the waveforms having both positive and negative half cycles can be clipped to either positive or negative voltage side only. The positive clipping is used to obtain negative voltages with rectifiers in dual voltage power supplies. In this case the method of clipping is called negative clipping and the method in which the entire positive half cycles are clipped away is called positive clipping. In a rectifier circuit which produces positive output voltage from the sinusoidal input voltage, the negative half cycles of the sinusoidal waves are simply clipped away. The most commonly found circuit in which the clipping of a waveform is used is the rectifier circuit. This article discusses the details of the clipping and the practical positive and negative clipping circuits. The clipping is done by eliminating the portions of the waveform which are out of the input range of the circuit into which it needs to be applied. has both positive and negative cycles and varying amplitude they have to be modified in such a way the single supply electronic circuits can operate them.Ĭlipping of a wave is the common technique that is applied on the input signals to modify them so that they fall in the operating range of the circuits. Since the natural signals like sine wave, audio signals etc. Since most of the devices works on single positive supply the input range will also be in the positive side. ![]() Any signals which have amplitude higher than this particular rage can cause distortion in the output of the circuit or may even cause damage to the circuit components itself. ![]() have a particular range at which they can accept the input signals. The electronic circuits like amplifiers, modulators etc.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |