...信号，此电平加到V851的基极，V851截止，集电极高电平，VD851导通，将14V电压通过R853、VD851加到DK805（TL431）的参考端（REF），使此电压上升，相当于这个时候的误差取样信号的取样点电压升高很多，那么通过DK805、N802加到N801的4脚上，使电源各输出绕组输...
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参考地，通常是指潜在的参考端，有时被称为回路或公用信号。
Reference ground, sometimes called a return path or signal common, is usually the reference potential of interest.
假如参考端温度的变化没被补偿，就会有相应的毫伏电压变化，结果会导致温度测量的误差。
Should there be an uncompensated variation in the reference junction temperature, there will be a corresponding change in millivolt with a resultant error in temperature measurement.
要用热电偶实现精确的温度测量，参考端温度必须保持恒定；如果会变化，必须提供这些变化的适当补偿。
To make accurate temperature measurements with thermocouples, the reference junction temperature must remain constant. If it varies, suitable compensation for these variations must be provided.
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