CPC Subgroup
H03C 1/14 the element being a diode
Full Title
Amplitude modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance element (H03C1/28 - H03C1/34, H03C1/46 - H03C1/52, H03C1/62 take precedence) > the element being a diode