Circuit diagram

A circuit diagram (also diagram ) is a conventional in electronics graphical representation of an electrical circuit. Do not take into account the real shape and arrangement of the components, but is an abstract representation of the functions in the form of custom icons for the individual components and their electrical interconnection. For related and used in the field of electrical engineering and electrical installation technology is the circuit diagram.

Besides the general informative presentation is a circuit diagram also serves among other things, the following purposes:

General

In schematics mostly standard circuit symbols are used, but not consistently. The graphical symbols are 60617 cover, inter alia in the IEC, which is used primarily in Europe. In the North American region are forms of presentation according to the ANSI standard Y32 (IEEE Standard 315 ) are common. A typical different symbol is shown, for example, the electrical resistivity, which is represented as a zigzag line to IEC standard as a rectangle and ANSI standard.

In the illustration alongside various common forms of electrical connections of wires in switch covers are shown in the left column, and so. In the right column line crossings without electric connection

For components comes when needed, add a designation system in which each component has a unique name (English reference designator ) receives. These data are needed among others for the creation of the BOM and PCB layout as part of the production.

Schematics in electronic form often contain not only the graphical representation further not graphically represented information in the form of parameters and attributes. These can be electrical parameters of the interconnections between the components describe, for example, minimum or maximum conductor thickness on the PCB and their distances to each other or certain line impedances. When the individual components in the circuit diagram concrete manufacturer names, part numbers or stock numbers can be stored.

The derived from the circuit diagram circuit board is often fitted as part of the production and use in various electronic devices in several variants. What elements must be populated for each variant, is also an information, which is usually listed in the schematic.

If the contents of the wiring diagram to be simulated, the diagram contains specific information about the type of simulation.

Standardize

  • IEC 60617, DIN EN 60617 is identical to British Standards BS 3939 and
  • ANSI Y32, identical to IEEE Standard 315
Physical design (electronics) Netlist KiCad Electronic circuit simulation International Electrotechnical Commission Institute of Electrical and Electronics Engineers
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