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本文介绍用KD—28制作的两种装置,具有电路简单、成本低廉、制作容易等特点。一、双声道记忆增强器该装置的工作原理如图1所示。话筒M_1、M_1将音频信号变为交流电信号,经C_6和C_8耦合分别输入到两只功放的同相输入端放大,其输出经电容C_2、C_3电容耦合,分别推动两只耳机(EAR)发声。如果戴上耳机,并将两只话筒M_1和M_2分别放在两侧,
This article describes the use of KD-28 produced two devices, with a simple circuit, low cost, easy to manufacture and so on. First, the two-channel memory enhancer The working principle of the device shown in Figure 1. The microphones M_1 and M_1 convert the audio signal into an alternating current signal and are respectively input to the non-inverting input terminals of the two power amplifiers through C_6 and C_8 couplings. The output of the microphones M_1 and M_1 is capacitively coupled through capacitors C_2 and C_3 to respectively drive two earphones (EARs). If you put on the headphones and put two microphones M_1 and M_2 on each side,