ELECTRICAL COIL WINDING
What is
Electrical Coil Winding?
Simply put, electrical coil winding is the process of winding a
conductor such as copper wire around a core to create an inductor or
transformer. A finished coil will have many turns (or loops of wire
around the core) with the exact number depending on the inductance
needed. Single-layer coils can be calculated in units known as
microhenries, where the number of microhenries equals the coil radius
squared times the number of turns, divided by 9 times the coil radius
plus 10 times the length of the coil in inches.
Common types of coils created through winding are bifilar toroids, layer
windings, bobbin coil assemblies, non-form bobbins, and AC & DC
transformers.
Coil winding is an art as much as a science, and there are a number of
techniques that can be used to increase their reliability. Sleeving on
the leads, for instance, can greatly increase the reliability of coil
windings in the field. The composition of the core and even the type of
glue used can also affect the reliability of coils created through coil
winding.
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