IPC Subgroup
H03G 7/06 having semiconductor devices
Introduced: September 1968
Last revised: January 2006
Full Title
Volume compression or expansion in amplifiers > having semiconductor devices
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- CONTROL OF AMPLIFICATION
1 direct subcode
Child Classifications
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- H03G 7/08 incorporating negative feedback