by means of a variable reactive element

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Angle modulation > by means of variable impedance > by means of a variable reactive element

CPC:

Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence) > by means of a variable reactive element

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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H03C 3/14 simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit +1 CPC IPC+CPC Available in IPC and CPC
H03C 3/18 the element being a current-dependent inductor IPC+CPC Available in IPC and CPC
H03C 3/20 the element being a voltage-dependent capacitor IPC+CPC Available in IPC and CPC
H03C 3/22 the element being a semiconductor diode, e.g. varicap diode +3 CPC IPC+CPC Available in IPC and CPC