Modifications of amplifiers to extend the bandwidth

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 2 combined children, 1 exist in both systems.

1 codes exist only in IPC.

Child Classifications

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H03F 1/44 of tuned amplifiers −1 IPC IPC only IPC only
H03F 1/48 of aperiodic amplifiers +2 CPC IPC+CPC Available in IPC and CPC