DIFF Subgroup
H03D 1/14 by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: by means of non-linear elements having more than two poles
CPC: by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)
Full Title
Full titles differ between systems:
IPC:
Demodulation of amplitude-modulated oscillations > by means of non-linear elements having more than two poles
CPC:
Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) > by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
Child Classifications
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- H03D 1/20 with provision for preventing undesired type of demodulation, e.g. preventing anode detection in a grid detection circuit IPC+CPC Available in IPC and CPC