IPC Main Group
H01F 19/00 Fixed transformers or mutual inductances of the signal type
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
Related Keywords
mutual INDUCTANCE(S)
2 direct subcodes
Child Classifications
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- H01F 19/02 Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range
- H01F 19/04 Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range