Voltage-sensitive circuit, frequency source and voltage-controlled oscillator thereof

A voltage-sensitive circuit, a frequency source and a voltage-controlled oscillator thereof. The voltage-controlled oscillator comprises an inductance assembly, wherein the inductance assembly comprises 2N groups of winding inductor groups. The Mth (M is an odd number) winding inductor group is arranged in parallel and close to the adjacent winding inductor group behind, when N=1, a corresponding terminal of the first group of winding inductor groups is connected to that of the second group of winding inductor group, a non-corresponding terminal of the first group of winding inductor groups is a signal input end, and a non-corresponding terminal of the second group of winding inductor groups is a signal output end; alternatively, the non-corresponding terminal of the first group of winding inductor groups is connected to that of the second group of winding inductor groups, the corresponding terminal of the first group of winding inductor groups is a signal input end, and the corresponding terminal of the second group of winding inductor groups is a signal output end.