Semiconductors: p-n junction diodes

Rectifier

A rectifier is an electrical device that transforms alternating current (AC), which reverses direction on a regular basis, to direct current (DC), which only travels in one direction. The reversing is done by the inverter. Because it “softens” the current course, the operation is called rectification. Rectifiers have a wide range of applications, although they’re most […]

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Zener Diode as a Voltage Regulator

What is a voltage regulator? There are several types of voltage regulators. They effectively reduce the input voltage to the desired level and maintain that level throughout the supply. This ensures that the voltage does not drop even when a load is applied. There are two primary purposes for which the voltage regulator is employed:

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Zener diode

A diode is an electrical component which is used for the conduction of electrical current in a single direction. A diode is known to have lower resistance in one direction and higher resistance in the other direction. A Zener diode has a special kind of electrical diode that has the ability to make the electrical

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Types of Semiconductor

In Physics, there are certain substances like metals, seawater, graphite etc. that allow free flow of electric current through them. These substances are known as pure conductors. On the other hand, there are certain materials whose composition does not permit electric current to run through them. These are known as insulators. For example cotton, rubber,

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

transistor as an amplifier

Introduction Before the invention of the transistor in 1948, vacuum tubes were used to switch electric signals and power. These tubes were also called valves. In vacuum tubes, the supply of electrons is from the heating of the cathode and the flow of electrons is by varying the voltage between its different electrodes.  There are

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Transistor action

The bipolar junction transistor (BJT) is a three-terminal semiconductor device with two p/n junctions that can amplify or magnify a signal. BJTs are available in a variety of sizes and forms. The charge carriers in a junction transistor are both electrons and holes. The base of a transistor is made thin and lightly doped, which

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

The Working of a Potentiometer

A potentiometer (also known as a pot or potmeter) is defined as a 3 terminal variable resistor (or variable resistor) consisting of two pairs of terminals, such that the voltage divider formed between the two potentiometer’s terminals represents the resistance of a particular adjustable resistance in an electrical circuit. What is a potentiometer? A potentiometer

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Short note on Zener Diode as a Voltage Regulator

Zener diode is a special type of diode that acts as a normal diode when forward biassed, but it can also be operated in a reverse biassed mode. It is like a normal p-n junction diode with the only difference that its breakdown voltage has a lower value. When the breakdown region is reached, it

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Semiconductors

A semiconductor is a material, usually a strong substance component or compound, that can lead power under specific conditions, however not others, making it a fantastic tool for controlling the progression of the electrical flow. A semiconductor is a translucent strong between a channel and a separator as far as electrical conductivity. Insulators, semiconductors, and

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes

Semiconductor Diodes

Semiconductors are materials that have conductivity values between those of metals and non-metals. Semiconductors may be further classified into two categories: a) Semiconductors of the p-type (which are positively charged) b) Semiconductors of the n-type (which are negatively charged) Semiconductor diodes are the p-n junction diode formed by the doping of elements of group 14

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Class 12, Electronic Devices, NEET, Physics, Semiconductors: p-n junction diodes