基于声音放大电路的输入级和音调控制电路硬件电路模型系统设计-Design of Hardware Circuit Model for Input Stage and Tone Control Circuit Based on Sound Amplifier

飞思卡尔B车电磁传感器，放大倍数50倍左右，实测能用。-Freescale B car electromagnetic sensor, magnification of about 50 times, measured can be used.

这个模块是一个利用TI公司LM386放大芯片设计的放大200倍增益的电路，实测做出来的电路最多可以达到100倍左右的增益。-This module is a use of TI amplifier LM386 chip designed to amplify 200 times the gain of the circuit, the circuit can be measured to achieve up to about 100 times the gain.