continuously variable, e.g. variometers

Full Title

Variable inductances or transformers of the signal type (H01F36/00 takes precedence) > continuously variable, e.g. variometers

Child Classifications

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• H01F 21/04 by relative movement of turns or parts of windings
• H01F 21/06 by movement of core or part of core relative to the windings as a whole
• H01F 21/08 by varying the permeability of the core, e.g. by varying magnetic bias
• H01F 21/10 by means of a movable shield