A circuit diagram is commonly known as a schematic diagram. It is a visual representation of an electrical circuit that depicts the components, their connections, and their electrical relationships, using standard symbols. Other synonyms for circuit diagram are electronic diagram, wiring diagram, electrical schematic, and circuit graphic. A schematic diagram is used by technicians and engineers in the electronic industry to design and explain electronic circuits. It is an essential tool for troubleshooting and repairing electronic circuits. The use of these terms may vary depending on the industry, but they all refer to the same type of graphical representation used to depict electrical circuits.