IPC Subgroup
H03F 1/42 Modifications of amplifiers to extend the bandwidth
Introduced: September 1968
Last revised: January 2006
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
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- AMPLIFIERS
2 direct subcodes
Child Classifications
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