Characteristics of JFET: The characteristics of JFET is defined by a plotting a curve between the drain current and drain-source voltage. The variation of drain current with respect to the voltage applied at drain-source terminals keeping the gate-source voltage constant is termed as its characteristics. Basically, the characteristics are of two types that are output characteristics or drain characteristics, and the another is transfer characteristics. Let us discuss each of the mentioned … [Read more...] about Characteristics of JFET
JFET as an Amplifier
We are already aware of JFETs; now we should be acquainted with its application in electronics realm. An amplifier is one of the most significant electronic devices which is used in almost every domain whether it is communication system or power systems. In the same way, by which we use bipolar transistors as an amplifier, we can also utilize JFET as an amplifier. Using JFET as an amplifier To understand, how a JFET works as an amplifier, first we should be well aware of the fact that how does … [Read more...] about JFET as an Amplifier
Junction Field Effect Transistor (JFET)
Definition: JFET is an acronym used for Junction field effect transistor. The JFET works on the principle that the current, more precisely the output current which flows through the device varies with the applied gate voltage. Thus, the electric field applied at gate terminal control the flow of current through the device and thus its name is field effect transistor.It consists of three terminals that are gate, source and drain. The output current flows from the drain terminal towards the … [Read more...] about Junction Field Effect Transistor (JFET)
AC Voltmeter
Definition: AC voltmeters are designed in a manner so that they can measure the AC voltage under measurement. The main difference between AC voltmeter circuit and DC voltmeter circuit is the usage of a rectifier. The rectifier is used in order to transform the AC voltage into DC voltage. Block Diagram of AC Voltmeter To develop a basic understanding of AC voltmeter, it is crucial to have a brief idea of the block diagram of AC voltmeter circuit. The block diagram of AC voltmeter resembles the … [Read more...] about AC Voltmeter
Half Subtractor
Definition: The Half Subtractor is a digital circuit which processes the subtraction of two 1-bit numbers. In this, the two numbers involved are termed as subtrahend and minuend. In the subtraction procedure, the subtrahend will be subtracted from minuend. The circuit of Half subtractor consists of two inputs and two outputs. The inputs of the half subtractor circuit will be subtrahend and minuend. On the other hand, the output will be the difference and the borrow. The word “HALF” before … [Read more...] about Half Subtractor
Difference between Amplifier and Repeater
The major difference between amplifier and repeater is that an amplifier amplifies the weak signal and the noise associated with this signal also gets amplified. On the contrary, the repeater does not amplify the noise signal. Although a receiver also consists of an amplifier in it but apart from this it also possess a signal reshaping circuit which reshapes the distorted signal and amplifies the undistorted signal. One may think why these amplifiers and repeaters are used in electronic … [Read more...] about Difference between Amplifier and Repeater
Field Effect Transistor (FET)
Definition: FET is an acronym used for “field effect transistor”. It is a three terminal unipolar device in which conduction is manipulated with the help of applied electric field. The name itself gives a brief idea about its working principle, “field effect”, these two words clearly indicates it is a transistor controlled by electric field. Thus, it is also referred as a voltage controlled device in which only majority charge carriers are involved in the conduction mechanism. It comprises of … [Read more...] about Field Effect Transistor (FET)
Difference between Demultiplexer and Decoder
The main difference between demultiplexer and decoder is that a demultiplexer is a combinational circuit which accepts only one input and directs it into one of the several outputs. On the contrary, the decoder is a combinational circuit which can accept many inputs and generate the decoded output. The demultiplexer has selection lines to allow the input to follow one of the selected paths for generating it at the output. The decoder does not possess any selection lines as it has nothing to … [Read more...] about Difference between Demultiplexer and Decoder
Clapp Oscillator
Definition: The Clapp Oscillator is an electronic device that consists of single stage amplifier and a phase shift network.The basic function of an oscillator is to generate the sinusoidal signal and the same work a Clapp oscillator does. With the help of amplifier circuit, it provides the amplified signal to the phase shift network. This in return provides regenerative feedback to the amplifier circuit and thus sustained oscillations are produced. Have a look at the block diagram … [Read more...] about Clapp Oscillator
Oscillator
Definition: Oscillator is a circuit which utilizes positive feedback amplifier to generate sinusoidal waveforms of fixed amplitude and frequency. It is the major source of power in electrical and electronic instruments. The amplifier provided with the positive feedback can generate the sinusoidal signal even in the absence of any input. These signals are termed as oscillations, and hence the device is known as an oscillator. The positive feedback here implies the addition of some part of the … [Read more...] about Oscillator