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本电路是使用于反调制装置与数据末端等界面处的接收电路,它使输入具有带特性。是一种噪音容限大的电略。接收电路的转入界面电平通常为-8V(信号1)和+8V(信号0),但接收电路必须把-3V以下判断成信号1,把+3V以上判断为信号0,此外,本电路的输出可与TTL连接。 图1示出电路结构,R_1和R_2决定电路的输入阻抗,同时又是分割输入电压使之加进比较器的反相转入中的分割电阻。此外,R_3和R_4使输出电压和电源电压(-6V)产生一偏压,
This circuit is used in the anti-modulation device and the data at the end of the receiving circuit interface, which makes the input with band characteristics. Is a large noise margin of electricity slightly. Receiving circuit into the interface level is usually -8V (signal 1) and +8 V (signal 0), but the receiving circuit must be judged to signal below -3V 1, the signal above + 3V 0, in addition, the circuit The output can be connected with TTL. Figure 1 shows the circuit structure, R_1 and R_2 determine the input impedance of the circuit, while dividing the input voltage is added to the inverters of the comparator into the split resistance. In addition, R_3 and R_4 bias the output voltage and supply voltage (-6V)