DIFF Main Group
H03G 1/00 Details of arrangements for controlling amplification
Introduced: September 1968
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H03G 1/02 Remote control of amplification, tone or bandwidth (combined with remote tuning or selection of resonant circuits H03J) IPC+CPC Available in IPC and CPC
- H03G 1/04 Modifications of control circuit to reduce distortion caused by control (modifications to reduce influence of variations of internal impedance of amplifying elements caused by control H03F1/08) IPC+CPC Available in IPC and CPC