Electronic Electrical Symbols

5 min read
27 December 2022

Objects and functions are described using electrical electronic symbols. These include logic gates, resistors, inductors, and transformers. Electrical circuits are also explained and diagrammed using them.

Electrical circuit diagram basics

Electrical circuit maps that depict the current flow are known as circuit diagrams. These schematics are useful for troubleshooting circuits, but they cannot take the place of a circuit's actual physical implementation.

A circuit diagram might be straightforward or intricate. The kind of electronic parts used in the circuit determines this. However, it is simple to detect and comprehend the fundamental circuit symbols.

The resistor is the fundamental element of an electrical circuit. The resistor in a circuit regulates the current flow. A zigzag line with two terminals spreading outward is a typical resistor symbol.

the typical electrical symbols

Graphical representations of electrical devices are known as electronic symbols, also referred to as schematic symbols. Diagrams of electrical circuits are made using them. Electrical symbols are typically standardised and based on universal principles. The symbols have been created to be simple to read and comprehend.

A switch, a battery, a cell, a resistor, a motor, a relay, a fuse, and a transformer are typical electrical and electronic symbols. Many different disciplines embrace these symbols on a broad scale. Some symbols, however, are exclusive to certain specialties.

A curved plate and two terminals serve as the representation of a polarised capacitor in the symbol. The negative pin is denoted by a flat side, and the positive pin is denoted by a little plus sign.

Logic devices

Electronic devices store and process data using logic gates. These parts are found in tablets, laptops, cellphones, and other digital devices. Circuit symbols are frequently used to depict them. Symbols often represent an input and output, such as a "bubble" that denotes logic negation or the high or low output of logic.

Additional digital electronics building blocks can be created by combining logic gates. The NOT gate, AND gate, and NAND gate are the three fundamental types of gates. These gates each have distinctive features and employ various symbols.


A resistor is a passive part that controls the voltage and charge flow in an electrical circuit. Resistors come in a variety of forms, such as general-purpose, fixed, and variable. They were not all made equal, though. Some might be more expensive or dissipate power more.

Resistance is typically represented by the letter "R" or the character R. When a value has a decimal place, it is frequently used in place of the decimal separator, "d."

The SI unit for electrical resistance is the ohm. Georg Simon Ohm, a German physicist, was honoured with its name. The British Association for the Advancement of Science proposed the ohm, a measure of resistance derived empirically and equal to 109 CGS units, in 1861.


A coil of wire coiled around a solid core is an inductor. In order to add a magnetic field to an electrical circuit, it is used. The inductance value that is produced is inversely proportional to the wire's number of turns.

Other circuit components can be harmed by the induced voltages from inductors. One method of halting the flow of current is by using fuses.

Electronic Electrical Symbols

Different sizes and shapes are available for inductors. They may be fashioned like rings or be continuous loops. Their fundamental core determines how they are categorised.

The substance used for the core is crucial. Compared to paramagnetic metals, copper is favoured. One more substance is ferrite. Good magnetic permeability is provided by this.


An electronic circuit known as an electrical transducer transforms a physical quantity into an electrical signal. It can be used to measure a variety of physical parameters, including magnetic field, sound, light, vibration, velocity, and temperature.

There are numerous varieties of transducers on the market. Some of them are more precise than others. Some are also more effective than others. Considering these features is crucial while selecting a transducer.

Active and passive transducers are separated into two groups. While passive transducers can draw energy directly from the source, active transducers depend on an external power source. Both varieties of transducers are made to fulfil particular requirements and have specific functionalities.


Transform alternating current (AC) voltage and energy into direct current (DC) voltage and energy using a transformer. Transformers are utilised in a variety of settings, such as power plants, control systems, and measurement tools.

Energy is exchanged between magnetic coils in a transformer on a fundamental level, either by mutual induction or the skin effect. Windings, chokes, and solenoids are examples of magnetic coils. Transformers typically fit in the hand and may be carried. Power grids, which can be very vast, also employ transformers.

In case you have found a mistake in the text, please send a message to the author by selecting the mistake and pressing Ctrl-Enter.
nextpcb 0
NextPCB is one of the most experienced PCB manufacturers in Global, has specialized in the PCB and assembly industry for over 15 years. Not only could NextPCB p...
Comments (0)

    No comments yet

You must be logged in to comment.

Sign In / Sign Up

  • Ahsan Electronics

    Welcome to Ahsan Electronics Welcome to Ahsan Electronics, our electronic Home Appliances store has a wide range of products that will suit your needs. Bro...

    Ahsan electronic · 24 November 2023 · 1