Electrical Symbols

The importance of electrical symbols

Electric Symbol Circuit

An electrical symbol is a pictogram used to represent various electronic and electrical devices (such as wires, batteries, resistors, and transistors) in a schematic diagram of an electrical or electronic circuit.

Electrical symbols and electronic circuit symbols are often used for drawing circuits.These symbols represent electronic devices and components. Edraw Max was the one who demonstrated standard electrical symbols, that had recognizable, industrial standard and even vector-based for electrical schematic diagrams. These helps you to design circuit instantly.

The Electrical Symbols and Their Meanings


Earth electrode is a metal plate, water pipe, or other conductor of electricity partially buried in the earth so as to constitute and provide a reliable conductive path to the ground

Cell is a device containing electrodes immersed in an electrolyte, used for generating current or for electrolysis.

Battery is a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.

Source is a part of a field-effect transistor from which carriers flow into the inter-electrode channel.

Ideal source includes ideal voltage source and ideal current source. An ideal source is a theoretical concept of an electric current or voltage supply (such as a battery) that has no losses and is a perfect voltage or current supply. Ideal sources are used for analytical purposes only since they cannot occur in nature.

Resistor is a device having resistance to the passage of an electric current.

Capacitor is a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator.

Antenna is an electrical device which converts electric power into radio waves, and vice versa.

Some most commonly-used basic electrical symbols used in schematic diagrams are shown below:

Most Commonly Used Basic Electrical Symbols

Let we take a look at how to use the basic electrical symbols to provide a schematic diagram of the circuit and its components. Example one: three D-cells are placed in a battery pack to power a circuit containing three light bulbs. Each light bulb is represented by its own individual resistor symbol. Straight lines have been used to connect the two terminals of the battery to the resistors and the resistors to each other.


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