电视广播、电影录音、午台扩音及其它高保真声频系统中的多频补偿器,为获得谐振性频率补偿特性,以往是采用电感和电容所组成的谐振网络,但是由于电感量和屏蔽等的困难,以及大电感的 Q 值不易作高,尤其在低频时,要求电感量大,Q 值高、体积小将受磁芯和绕制工艺的限制,所以也有用 R-C Multi-frequency compensators in TV broadcasting, movie recording, midday loudspeakers and other high-fidelity audio systems used to be resonant networks of inductors and capacitors in order to obtain resonant frequency compensation, but due to inductance and shielding, etc. Of the difficulties, as well as large inductor Q value is not easy to make high, especially in the low frequency, requiring a large amount of inductance, Q value is high, small size will be subject to the core and winding technology constraints, it is also useful RC