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Articles on Trending Technologies
Technical articles with clear explanations and examples
MOSFET – Types and Working Principle
A Metal Oxide Semiconductor Field Effect Transistor (MOSFET) has four terminals − Source (S), Gate (G), Drain (D), Body (B). It is a semiconductor device which is used for switching and amplification applications in electronic circuits. In general, the body terminal is connected with the source thus forming a three terminal device just like an FET.The MOSFET is a voltage controlled device. Since its operation depends upon the flow of majority carriers only, hence MOSFET is a unipolar device.In other words, An FET that can be operated in the enhancement mode is known as MOSFET.Why the Name MOSFET? The gate ...
Read MoreHow to Test a Transistor Using a Digital Multimeter
Basically a transistor is nothing but two pn-junctions connected back to back. By examining both the junctions (Emitter-Base junction and Collector-Base junction) with the help of a digital multimeter, we can comment on the functionality of the transistor.The test of the transistor is based on the principle of pn-junction biasing, i.e., when a forward bias is applied to the pn-junction (by connecting positive terminal to the p-region and negative terminal to the n-region), the junction allows current to through it. When the reverse bias applied to the junction, it behaves as an open circuit.NPN Transistors are widely used. We can ...
Read MoreEnhancement Mode MOSFET
The Enhancement Mode Metal Oxide Semiconductor Field Effect Transistor (EMOSFET) is a three-terminal Device viz. Source (S), Gate (G) and Drain (D). The EMOSFET is a voltage controlled device.The EMOSFET can be operated in the enhancement mode only. The EMOSFET has no physical channel from source to drain since the substrate extends completely to the SiO2 layer.By the application of gate–source voltage (VGS) of proper magnitude and polarity the device can be made operating. The use of VGS induces an n-channel just below the gate terminal and this made the device operating.The minimum value of VGS of proper polarity that ...
Read MoreDigital Circuits and Their Applications
Digital electronics is branch of electronics which deals with digital signals to accomplish the tasks. The digital signals are the signals which are represented using the binary language, i.e., 0’s and 1’s.The digital circuits are implemented using logic gates like AND, OR, NOT, NAND, NOR, XOR and XNOR which can perform logical operations.Digital Circuit DefinitionA circuit implemented using a number of logic gate and takes the input in the binary form (0’s and 1’s) is called as Digital Circuit.Types of Digital CircuitsCombinational Digital CircuitsSequential Digital CircuitsDigital Logic GatesA logic gate is an electronic component that is implemented using a Boolean ...
Read MoreDiac Operations and Applications
A diac is a two-terminal, three-layer, bidirectional device which can be switched from OFF state to ON state for both positive and negative polarity of the supply voltage.Constructional Details of the DiacThe basic structure of a Diac is similar to a BJT transistor. The only difference is that there is no base terminal in case of Diac.The terminals of the diac are taken from the two p-regions of silicon that are separated by an n-region. The concentrations are identical in all layers to give the device symmetrical properties.V – Characteristics of DiacFrom I-V Characteristics of a Diac, for the applied ...
Read MoreDC Power Supply Filter Types
In practice, a rectifier is used to produce pure DC supply in electronic circuits. But the output of a rectifier is not pure DC, it has pulsations, i.e., it contains AC and DC components. The AC component is undesirable and must be removed. For this, a filter circuit is used."A Filter Circuit is a circuit which removes the ac component from the output of rectifier and produces the pure dc output across the load."The filter circuit should be placed between the rectifier and the load.A filter circuit is basically a combination capacitors (C) and inductors (L). A capacitor allows the ...
Read MoreNull Aware Operators in Dart Programming
Dart has different null aware operators that we can use to make sure that we are not accessing the null values and to deal with them in a subtle way.Mainly, these are −?? operator??= operator? operatorWe will go through each of them in the following article.?? operatorThe ?? operator returns the first expression if and only if it is not null.ExampleConsider the example shown below −void main() { var age; age = age ?? 23; print(age); var name = "mukul"; name = name ?? "suruchi"; print(name); }In the above example, we declared two ...
Read MoreImmutability in Dart Programming
Immutability is the ability to remain constant. Whenever we talk about immutability we mention the immutable nature.In object oriented and functional programming, we make use of the immutable nature of objects a lot. Being immutable means that the state of the object cannot be modified after its creation.It is a very important topic these days when we talk about front-end development, as there are several occasions and scenarios where we want to maintain the state and the way to do that is to make use of immutability.In Dart, there are different ways with which we can achieve immutability and sometimes ...
Read MoreFuture class in Dart Programming
There are different classes and keywords in Dart which we can use when we want to run Asynchronous code. The future class allows us to run asynchronous code and we can also avoid the callback hell with the help of it. A future mainly represents the result of an asynchronous operation.In Dart, there are many standards library calls that return a future, some of them are −http.getSharedPreference.getInstance()A future in Dart can have two states, these are −Completed - When the operation of the future finishes and the future complete with a value or with an error.Uncompleted - When a function is called, and it ...
Read MoreComments in Rust Programming
Comments in Rust are statements that are ignored by both the rust compiler and interpreter. They are mainly used for human understanding of the code.Generally, in programming, we write comments to explain the working of different functions or variables or methods to whosoever is reading our code.Comments enhance the code readability, especially when the identifiers in the code are not named properly.In Rust, there are multiple ways in which we can declare comments. Mainly these are −Single-line commentsMulti-line commentsDoc commentsIn this article, we will explore all the three comments.Single-Line commentSingle line comments in Rust are comments that extend up to ...
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