A circuit always has a battery (cell) but it can also contain other electrical components, such as bulbs, buzzers and motors. When drawing circuit diagrams, rather than drawing detailed components, we ...

Block diagrams can be written, usually in boxes, with the headings input, process, and output. When planning how a circuit will function, these headings are then used to plan what the input, process ...

Looking for a desktop tool to document up your next schematic? Check out the XCircuit project which offers a free open-source desktop drawing tool that outputs your schematic in a postscript format.