QElectroTech is an open source tool for drawing these types of diagrams. It consists of two tools: an element editor for creating schematic symbols and a diagram editor for creating your drawings.

When drawing circuit diagrams, rather than drawing detailed components, we use simple symbols to represent the different components.

Well, you probably had a schematic drawing template. We were surprised you can still buy these at high prices. Or you can 3D print your own, thanks to [Jan Stech]. Templates of all kinds used to ...