Air-cored foil-wound inductors
- 1 January 1978
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the Institution of Electrical Engineers
- Vol. 125 (5) , 460-464
- https://doi.org/10.1049/piee.1978.0111
Abstract
The inductance value of a foil-wound inductor is equal to that of a similar wire-wound inductor at low frequencies, but as the frequency rises, the foil inductance decreases by about 10% because of current redistribution across the foil width. A table and a formula for d.c. inductance values are given. The occurrence of a first resonance frequency due to intertum capacitance is explained and an approximate formula stated. Methods of optimising the design of foil inductors are described. Compared with wire inductors, foil coils have considerable a.c. resistance.Keywords
This publication has 1 reference indexed in Scilit:
- Formulas and tables for the calculation of the inductance of coils of polygonal formScientific Papers of the Bureau of Standards, 1922