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电路中按照类似于CMOS连接的双极互补逻辑一直被认为是不实用的。真正的互补电路(没有电阻!)需要用电压输入信号控制开关。与FET场效应晶体管相对照,双极型晶体管通常是用电流信号导引的,这是因为在普通的电路中,输入电压的变化(容差、温度)会引起不容许的电流变化。下面,我们将讨论为作出真正可行的互补电路所需要的运行和设计条件。图1表示具有两路NAND CTL的门电路。这电路的输入和输出电平,在理想状态下,和供给电路的电位一样,即地或V_0。这意味着所有的晶体管的饱和压降V_(CES),在理想状态下
Bipolar complementary logic in circuits that follow a CMOS connection has been considered impractical. True complementary circuitry (no resistance!) Requires a voltage input signal to control the switch. In contrast to FET field-effect transistors, bipolar transistors are usually guided with current signals because variations in input voltage (tolerance, temperature) can cause impermissible current changes in normal circuits. In the following, we will discuss the operational and design conditions needed to make truly viable complementary circuits. Figure 1 shows a gate with two NAND CTLs. The input and output levels of this circuit, in the ideal state, are the same as those of the supply circuit, either ground or V_0. This means that the saturation voltage drop of all the transistors V_ (CES), in the ideal state