IPC Subgroup
H01F 21/06 by movement of core or part of core relative to the windings as a whole
Introduced: September 1968
Last revised: January 2006
Full Title
Variable inductances or transformers of the signal type > continuously variable, e.g. variometers > by movement of core or part of core relative to the windings as a whole
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES