DIFF Subgroup
H01F 27/24 Magnetic cores
Introduced: September 1968
Full Title
Details of transformers or inductances, in general > Magnetic cores
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H01F 27/245 made from sheets, e.g. grain-oriented (H01F27/26 takes precedence) since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- H01F 27/25 made from strips or ribbons (H01F27/26 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- H01F 27/255 made from particles (H01F27/26 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- H01F 27/26 Fastening parts of the core together; Fastening or mounting the core on casing or support (on coil H01F27/30) +2 CPC IPC+CPC Available in IPC and CPC