Electrical schematic diagrams are available from a variety of online and software sources, including AutoCAD software, and many additional online sources offer tips for users to understand and design their own schematics. Symbols are used to diagram the electronic devices in an electronic circuit, and the same basic symbols are used in most schematic diagrams so that readers can easily understand the diagram.
Electrical schematics are used to create a model of electrical circuits so that anyone reading the schematic understands how the parts are connected. Common circuit components that are present in most basic schematics include:
- Potentiometers and Variable Resistors
- DC or AC Voltage Sources
- Voltage Nodes
- Bipolar Junction Transistors
- Metal Oxide Field-Effect Transistors
- Digital Logic Gates
- Integrated Circuits
- Op Amps or Voltage Regulators
- Crystals and Resonators
- Headers and Connectors
- Motors, Transformers, Speakers and Relays
- Fuses and PTCs
The symbols are connected through a series of nets, nodes and labels. Nets connect component terminals and are sometimes represented through different colors. Junctions and nodes are used to represent where wires connect terminals together through lines and dots.
Once users understand how to read and diagram electrical schematic diagrams, they can manually create their own circuit designs, or utilize a tool such as AutoCAD Electrical software that will create electrical schematics while offering editing options.