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高低电平切换静音电路,你要看全规格书的说明,你不可能窥一斑见全豹,所以要详细了解规格书中关于静音电路的说明,这是新手必经之路。
可以简化,但你得加是手动机械开关切换。规格书给出的是电子延时开启,RC组成充电延时电路,延时多久可以设定。
用翻译软件翻译以下英文说明,理解透。
Operation Explanation
1) About VST (#13pin Stand-by Threshold)
<1> Operation Mode
When pin 13 reference voltage VST is equal to or greater than 2.5V, the stand-by circuit is set off, and the
amplifier is set to the operation mode.
<2> Stand-by Mode
When pin 13 reference voltage VST is equal to or less than 0.6V, the stand-by circuit is set off, and the amplifier is
set to the stand-by mode.
(*3) The pop noise that occurs when the power is turned ON is reduced by providing a time constant using a capacitor
during operation.
(*4) The pop noise level is reduced by discharging the capacitor with a resistor in the stand-by mode.
操作说明的 第一条是工作模式,指“当 13 脚参考电压 VST 等于或大于 2.5V 时,待机电路关闭,放大器切换为工作状态”,也就是电源开启后,TR1,R03,R31,R33,C32组成的充电延时转换开关,电容C32两端充电达到2.5V以上(规格书设计值3.68V),待机电路关闭转换为工作状态。 |
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