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普通市售功放的共同点是:①左右声道完全相同;②共用同一组电源;③扬声器相位接法一致(图1)。经仔细分析便发现会有以下缺点:①正(或负)半波工作时,只有、且仅有正(或负)电源工作,易造成正(或负)电源负载过重,正(或负)电源电压下跌较大;②由于只有正或负电源工作,故正、负电源不对称,易造成失真和削波,不对称的电源对普通推挽电路尤其不利(静态分析是在正负电源电
Common commercial amplifier common point is: ① left and right channels are identical; ② share the same set of power; ③ speaker phase connection method (Figure 1). After careful analysis will find the following shortcomings: ① positive (or negative) half-wave work, only, and only the positive (or negative) power supply, can easily lead to positive (or negative) power overload, positive ) Power supply voltage drop is larger; ② As only the positive or negative power supply, so positive and negative power supply asymmetry, easy to cause distortion and clipping, asymmetrical power supply is particularly detrimental to the general push-pull circuit (static analysis is in the positive and negative power supply Electricity