CPC Subgroup
H03C 3/24 by means of a variable resistive element, e.g. tube
Full Title
Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence) > by means of a variable resistive element, e.g. tube
2 direct subcodes
Child Classifications
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- H03C 3/26 comprising two elements controlled in push-pull by modulating signal