DIFF Subgroup
H02M 1/14 Arrangements for reducing ripples from DC input or output
Introduced: September 1968
Full Title
Details of apparatus for conversion > Arrangements for reducing ripples from DC input or output
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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