## what is servo motor – working principal & application

To better understand the servo motor let us first see what is the meaning of term “servo”. The term servo is applicable for any system that uses a feedback mechanism in order to control the required situation. The feedback can be in the form of signals from sensors or limit …

## Electric Charge Of Electron

In order to understand the electric charge of electron let us first understand from where the charge comes?  As all of us know that matter is made up of atoms. An atom consists of Proton, Neutrons and Electrons. Proton is having the positive charge, electron is having negative charge and …

## Ammeter Function Symbol & Definition

What is an ammeter? Ammeter or ampere meter is an electrical measuring device, which as seen from its nomenclature is useful for the measurement of the ampere i.e. to measure electric current through the circuit. The normal symbol of ampere meter is capital A mentioned inside a circle. This is …

## Understanding Alternating Current or AC Current

The electricity which we use at home is normally the alternating current or AC. AC current is result of alternation of the generator armature or alternator. The electricity or current flows in one direction and then reverse direction. Each cycle in AC current consists of a positive and a negative …

## Ampere’s Circuital Law [Explained]

Ampere’s circuital law states that the line integral of magnetic field intensity about any closed path is exactly equal to the direct current enclosed by that path. In the figure below, the integral of H about closed paths a and b gives the total current I, while the integral over …

## Single phase and 3 phase power comparison

As a new electrical student or a common man this questions comes in mind that why we prefer 3 phase power system. In recent years 3 phase electric wiring has become common and mostly used worldwide for power generation, power transmission, distribution and three phase engines or motors. A single-phase …

## Stepper Motor Principle Types and Applications

A stepper motor is an electromechanical device which converts electrical pulses into discrete mechanical movements. The shaft or spindle of a stepper motor rotates in discrete step increments when electrical command pulses are applied to it in the proper sequence. Stepper motor (or step motor) is in fact a brushless …

## Voltage Regulator and Stabilizer – Simple Explanation

A voltage regulator is used to regulate or stabilize the voltage level for specific purpose. Voltage fluctuations are never acceptable for any appliance or equipment, because it may damage the electrical appliances etc. When a steady, reliable voltage is needed, then voltage regulator is the preferred device. Despite varying inputs …