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本文研究具有较高频率(10—20兆赫)的开关线路(称为电流开关)。开关有如下特点:由于在发射极加上恒定电流而没有饱和;负载的阻抗很小;没有使整个暂态过程变慢的惰性耦合元件;三极管的 b 最大值没有限制。文内讨论开关的静态和动态特性,双相发生器的工作,以及电流开关的两个触发器线路,并给出实验结果。这种开关虽有缺点(所需的电源功率大,标准元件中的三极管数量也很大),但并不影响它广泛应用于数字计算机和核子物理学仪器中。
This article looks at switching lines (called current switches) with higher frequencies (10-20 MHz). The switches have the following characteristics: no saturation due to the constant current applied to the emitter; small impedance of the load; no inert coupling element that slows down the entire transient process; and the maximum b-value of the transistor is not limited. The paper discusses the static and dynamic characteristics of the switch, the work of the biphasic generator, and the two flip-flop circuits of the current switch, and gives the experimental results. The disadvantage of this type of switch, which requires large power supplies and a large number of transistors in standard components, does not affect its widespread use in digital computer and nuclear physics instruments.