Electronic Terms

Center Tapped Full Wave Rectifier

The Center Tapped Full Wave Rectifier employs a transformer with the secondary winding AB tapped at the centre point C. It converts the AC input voltage into DC voltage. The two diode D1, and D2 are connected in the circuit as shown in the circuit diagram below. Contents: Operation of the Center Tapped Full Wave …

Center Tapped Full Wave Rectifier Read More »

Half Wave and Full Wave Rectifier

In Half Wave Rectifier, when the AC supply is applied at the input, a positive half cycle appears across the load, whereas the negative half cycle is suppressed. This can be done by using the semiconductor PN junction diode. The diode allows the current to flow only in one direction. Thus, converts the AC voltage …

Half Wave and Full Wave Rectifier Read More »

Semiconductor Diode

A p n junction is known as a Semiconductor Diode. The p n junction is used for the purpose of rectification as it conducts only in one direction. It is also known as crystal diode as it is made of a crystal-like Silicon or Germanium. The symbol of the semiconductor diode is shown below. It …

Semiconductor Diode Read More »

p n Junction

When a p-type semiconductor is suitably joined to an n-type semiconductor, the contact surface so formed is called p-n Junction. All the semiconductor devices contain one or more p n junction. The p-n junction is in effect, the control element for semiconductor devices. Formation of p-n Junction In actual practice, the PN junction is not …

p n Junction Read More »

Majority and Minority Carriers

In an n-type semiconductor, the electrons are the majority carriers whereas, the holes are the minority carriers. In the p-type semiconductor material, the holes are the majority carriers, whereas, the electrons are the minority carriers as shown in the figures below: When a small amount of Pentavalent impurity is added to a pure semiconductor, it …

Majority and Minority Carriers Read More »

Properties of Semiconductors

The substances which have resistivity (102 to 0.5 ohm-m) in between conductors and insulators are known as Semiconductors. For example – Germanium, Selenium, Carbon, Sulphur, etc. The following properties which distinguish semiconductors from conductors and insulators are described below. Resistivity of a Semiconductor The resistivity of a semiconductor is less than an insulator but more …

Properties of Semiconductors Read More »

Semiconductors

The Semiconductors, such as Germanium, Silicon, Carbon, Selenium, etc. are the materials which are neither conductors nor insulators. The conductivity of these materials lies in between or middle of the conductivity of conductors and insulators. Semiconductors have some useful properties and are extensively used for the preparation of solid-state devices like the diode, transistor, etc. …

Semiconductors Read More »

p Type Semiconductor

The extrinsic p-Type Semiconductor is formed when a trivalent impurity is added to a pure semiconductor in a small amount, and as a result, a large number of holes are created in it. A large number of holes are provided in the semiconductor material by the addition of trivalent impurities like Gallium and Indium. Such …

p Type Semiconductor Read More »

n Type Semiconductor

When a small amount of Pentavalent impurity is added to a pure semiconductor providing a large number of free electrons in it, the extrinsic semiconductor thus formed is known as n-Type Semiconductor. The conduction in the n-type semiconductor is because of the free electrons denoted by the pentavalent impurity atoms. These electrons are the excess free …

n Type Semiconductor Read More »