Schematics and electrical and electronic drawing

Abstract

We now come to the area of work which makes the most productive use of CAD of all. Schematics, whether electrical ladder diagrams, power distribution diagrams, telecommunications circuits, electronic circuits, hydraulic systems, pneumatic systems or chemical processes, all consist of symbols selected from a limited repertoire, arranged on the drawing and joined up by lines which represent connections. Figure 18.1 shows an electronic circuit. The advantage of being able to pick a symbol from a library without having to draw it each time is obvious.