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一种由晶体管模拟电感组成的新的串谐电路,目前已用于国外引进的高保真立体声声频设备中。本文从理论上分析了这种电路的原理、推导了回路阻抗函数及谐振频率函数表示式、编制计算机程序,绘制了音调控制器设计的诺模图,用实验方法验证了其特性、探讨了线路的优化设计方案。文中所推得的理论公式和诺模图在设计中有一定的实用价值。
A kind of new serial circuit composed of transistor analog inductors has been used in high-fidelity stereo audio equipment imported from abroad. In this paper, the principle of the circuit is analyzed theoretically, the circuit impedance function and the expression of the resonant frequency function are deduced, the computer program is compiled and the nomogram of the pitch controller is plotted. The experimental results verify the characteristics of the circuit, The optimal design. The theoretical formulas and nomographs deduced in this paper have some practical values in the design.