Inductor, Choke Coil & Transfomer Circuit Symbols
Circuit symbols for the various forms of inductors, chokes, coils and transformers: with and with out ferrite or iron cores.
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There is a large variety in inductor based components: coils, chokes, inductors, transformers and these can have a variety of cores including ferrite and iron. The circuit symbols must identify what these different components are in unique ways.
Accordingly there is a good selection of different inductor and transformer based circuit symbols.
Although many transformers may not be used on printed circuit boards for which the PCB shapes will not be required, many types of choke and inductor, and some transformers may be used on PCBs.
|Inductors, Coils Chokes & Transformers Circuit Symbols
|Inductor / Transformer Type||Circuit Symbol|
|Generic inductor, choke, or coil|
|Inductor with ferrite (iron dust) core|
|Inductor with iron core|
| Inductor tap on winding
the position may be varied to approximately
indicate the position of the tap.
|Air cored transformer|
| Air cored transformer with unequal turns ratio
side with fewer turns can be either side of
transformer symbol according to the turns ratio.
|Air cored transformer with tap|
|Ferrite cored transformer|
|Iron or laminated cored transformer|
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