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现有的线性集成电路新系列可以很简便地制作一些相当复杂的装置。因此,RCA提出利用它的CA3033A或CA3047A线路来制作一个数字电压表(参见64页附图),但其性能有限。这一装置是在阶梯线路原理上工作的。由一个阻塞多谐振荡器供给同步信号,因此,时频与电源电压无关。时钟信号控制一个阶梯信号发生器。为了使二极管的温度系数影响减至最小,该发生器的输入信号直接来自多谐振荡器。输出的信号同所要测量的电压相比。当这两个信号相等时,比较器就启动一
The new series of existing linear integrated circuits can make quite a few complicated devices easily. Therefore, RCA proposes to make a digital voltmeter using its CA3033A or CA3047A circuit (see the accompanying figure on page 64), but its performance is limited. This device is working on the principle of staircase circuits. A blocking multivibrator supplies the synchronization signal, so the time frequency is independent of the supply voltage. The clock signal controls a step signal generator. In order to minimize the influence of the temperature coefficient of the diode, the generator’s input signal comes directly from the multivibrator. The output signal is compared to the voltage to be measured. When these two signals are equal, the comparator starts one