DIFF Subgroup
H03F 3/213 in integrated circuits
Introduced: July 1974
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 > with semiconductor devices only > in integrated circuits
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) > with semiconductor devices only > in integrated circuits
No child classifications to compare. This is a leaf node in both IPC and CPC.