DIFF Subgroup
H03F 1/48 of aperiodic amplifiers
Introduced: September 1968
Full Title
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements > Modifications of amplifiers to extend the bandwidth > of aperiodic amplifiers
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
Child Classifications
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