SelectorPowerVolumeINTEGRATED AMPLIFIER XA-6950产品介绍第 2章2.1 本机电路结构2.2 前面板电源开关按钮按下此按钮,整机接通电源;再按此按钮将关断整机电源。显示窗及遥控接收窗口显示窗中显示本机各种信息,遥控接收窗将接收遥控器产生的控制信号。音量调节旋钮顺时针转动旋钮将增大音量; 逆时针旋转将减小音量。输入信号选择按钮每按一次此按钮,输入通道将发生变化。3uwuvwxvx左声道电流负反馈甲类功率放大级左声道前置放大left channel Currentnegative feedback power amplifier in left channelin right channelMCU控制继电器音源选择The Input selector utilizes relays which controlled by MCU The leftchannelpreamplifier右声道前置放大The rightchannelpreamplifier稳压电源Regulator稳压电源Regulator整机控制中心及显示电路Control unit and display unit右声道电流负反馈甲类功率放大级right channel Current Negative feedback power amplifier 数控马达电位器模拟音量控制音Analog Volume adjustedby motor-variable-resisternumerical controlled左声道功率级大容量电容滤波网络High capacitance filtrationnet for left channel右声道功率级大容量电容滤波网络High capacitance filtrationnet for right channel左声道保护检测Detecting for prtection右声道保护检测Detecting for prtection