schematics symbols and useage

​Although electrical components are represented by universally accepted schematic symbols, there are a number of variants and alternative symbols used throughout the world to represent the same electrical component or device.

​

For electronics, it doesn’t vary based on the type of circuit, but there are two different sets of symbols that I am aware of — US and European (aka IEC). They differ in the way resistors, capacitors and inductors are drawn

How do you define electrical symbols?

​

Electrical symbols are a graphical representation of basic electrical and electronic devices or components. These Symbols are used in circuit and electrical diagrams to recognize a component. It is also called a schematic symbol.

​Switch-a device for making and breaking the connection in an electric circuit.

​A wire- is a flexible metallic conductor, especially one made of copper, usually insulated, and used to carry electric current in a circuit.

​A contactor is - an electromechanical control device that used to make or break the connection between the load and power supply.

​An electric motor - is an electrical machine that converts electrical energy into mechanical energy.

​A transformer- is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits.