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把电路按其用途做成不同功能的模块,在具体应用的时候,无论设计和施工,都会感到十分方便。如果在研制时下些功夫,尽量减少外围电路里的元件,让人只要照着图纸焊好输入端和输出端,接通电源,无需调整,便能一试就灵,用起来尤感惬意。音响系统里的线路放大器增益大都为20dB 左右,频率响应宽,谐波失真小,工作时性能稳定,是对它最起码的要求。近年来面市的线路放大模块已不再以运放 IC 为主体,转而采用富有特色的由分立元器件构成的电路,
The circuit made of different functions according to their use of modules, in the specific application, regardless of design and construction, will feel very convenient. If you devote more effort to developing components and minimizing the components in the peripheral circuits, you only need to solder the inputs and outputs according to the drawing. When the power is turned on, you do not need to adjust it. Audio amplifier system line amplifier gain mostly about 20dB, wide frequency response, small harmonic distortion, stable performance at work, is its minimum requirements. In recent years, the market is no longer available to enlarge the line amplifier module is the main body, instead of using distinctive components from discrete circuits,