Circuit Board Diagram Symbols

An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions such as wires batteries resistors and transistors in a schematic diagram of an electrical or electronic circuit these symbols are largely standardized internationally today but may vary from country to country or engineering discipline based on traditional conventions.

Circuit board diagram symbols. Ieee 315 contains a list of class designation letters to use for electrical and electronic assemblies. They are mostly used to draw a circuit diagram and are standardized internationally by the ieee standard ieee std 315 and the british standard bs 3939. Here is an overview of the most used symbols in circuit diagrams. A reference designator unambiguously identifies a component within an electrical schematic or on a printed circuit board.

Schematic symbols are used to represent different electronic components and devices in circuit diagrams from wires to batteries and passive components to semiconductors logic circuits and highly complicated integrated circuits. The number is sometimes followed by a letter indicating that components are grouped or matched with each other e g. The schematic symbols for most major circuit diagrams can be found in this following images. The symbol for a battery is shown below.

Fortunately you need to know only a few basic symbols and labels to get you started. The actual layout of the components is usually quite different from the circuit diagram. Simple electronic circuits can have as little as two components. This enables anyone to read a circuit diagram and know what it does relatively quickly.

Circuit symbols of electronic components ac current circuit symbol. Most electronic circuits will have additional components. A large and a small line is suppose to represent one battery cell so that the image below would suggest a two cell battery of 3 v. Electrical symbols or electronic circuits are virtually represented by circuit diagrams.

There are some standard symbols to represent the components in a circuits. Circuit symbols are used in circuit diagrams showing how a circuit is connected together. There are hundreds of different types of electronic components and each has its own unique schematic diagram symbol. To be able to read schematics you must know the schematic symbols.

There are many electrical and electronic schematic symbols are used to signify basic electronic or. To build an actual electronic circuit we need different diagram showing the layout of the parts on printed circuit board. For example the letter r is a reference p. The reference designator usually consists of one or two letters followed by a number e g.

This article gives some of the frequently used symbols for drawing the circuits. The original layout of electronic components is different from the circuit diagram.