Power amplifiers, e.g. Class B amplifiers, Class C amplifiers (H03F3/26 - H03F3/30 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

CPC: Power amplifiers, e.g. Class B amplifiers, Class C amplifiers (H03F3/26 - H03F3/30 take precedence)

Full Title

Full titles differ between systems:

IPC:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements > Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

CPC:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements > Power amplifiers, e.g. Class B amplifiers, Class C amplifiers (H03F3/26 - H03F3/30 take precedence)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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H03F 3/21 with semiconductor devices only since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H03F 3/22 with tubes only (H03F3/24 takes precedence) IPC+CPC Available in IPC and CPC
H03F 3/24 of transmitter output stages +1 CPC IPC+CPC Available in IPC and CPC