IPC Subgroup
H03F 3/46 Reflex amplifiers
Introduced: September 1968
Last revised: January 2006
Full Title
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements > Reflex amplifiers
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- AMPLIFIERS
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- H03F 3/48 with tubes only