The Wave Winder

A wave wound coil. Wave winders are used to produce a type of coil possessing low self-capacitance and therefore a high self-resonant frequency. Essentially, it uses a high traverse rate which causes gaps between the turns. This is sometimes called an open or 'basket' weave. Also, each layer sits 'on top' of the underlying one, rather than interlocking with individual turns. The net result is decreased inter-turn and inter-layer capacitance.

Thumbnail photo of the Douglas Wave Winder The handwheel at the front of the winder sets the width of the coil. The winder requires setting up by selection of four gears which determine the weave pattern. It is normal to use either Litz wire or cotton/silk covered single strand wire. Plain enameled magnet wire will not grip the bobbin or previous layers sufficiently. Even then, it is best to coat the bobbin with a layer of impact adhesive in order to get the first few turns to 'stick' properly.

See also ...
[ Producing Wound components] [Conventional winder]

Last modified: 2007 March 26th.