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IPC Subgroup
H03C 1/08

by means of variable impedance element

Introduced: September 1968

Last revised: January 2006

Full Title

Amplitude modulation > by means of variable impedance element

Classification Context

Section:
ELECTRICITY
Class:
ELECTRONIC CIRCUITRY
Subclass:
MODULATION

Scope Notes

Limiting references: Amplitude modulation by means of transit-time tube Amplitude modulation by means of a magnetron Amplitude modulation by deflection of electron beam in discharge tube Amplitude modulation by means of light-sensitive element Amplitude modulators with mechanically or acoustically driven parts Amplitude modulation by means of Hall-effect devices Amplitude modulation by converting angle modulation to amplitude modulation Amplitude modulators in which carrier or one side-band are wholly or partially suppressed Amplitude modulators in which amplitude of carrier component in output is dependent upon strength of modulating signal, e.g. no carrier output when no modulating signal is present

3 direct subcodes

Child Classifications

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  • H03C 1/1 the element being a current-dependent inductor
  • H03C 1/12 the element being a voltage-dependent capacitor
  • H03C 1/14 the element being a diode