Baked Varnish Wire/ Resin Soaking
Baked varnish wire is enamel-insulated wire with an additional, activatable hot-melt outer layer, which has an adhesive effect when heated. The windings are thus fixed together.
Impact in practice
- The coil becomes mechanically stable and „works“ significantly less
- Micro-movements between windings are reduced
- In particular, this reduces macro-microphonic effects (the windings „work“ less) and increases “silence” during operation
Resin soaking as an alternative to baked varnish wire
If no baked lacquer wire is used, resin soaking carried out under vacuum can take over the mechanical fixing. The resin penetrates into the wrap, reduces cavities and degrees of freedom of movement and transforms the wrap into a stable compound. The result: significantly less macro microphones and an overall quieter, more precise operation of the coil.