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磁鼓和磁带常常用来作为数字信息的存储或中间存储元件。通过磁头和放大器讀出磁带或磁鼓上信息以便使用。本文只限于讨论用晶体管的讀出放大器的问题,给出了分析和设计步骤,测验了一个标准放大器,它是由开路输出信号大于2毫伏的再生讀头来带动的。这个放大器能驱动三个并联的双稳多谐振盪器,频率范围是2～400兆赫。工作温度的范围是0℃到+70℃。输出脈冲上升时间小于1微秒。在计算机中磁带和磁鼓常用作存储或中间存储元件。以数字形式存储在带或鼓上的信息通过磁头和放大器可以再被利用。在本文中研究了用一般晶体管的讀出放大器的设计。一般要求是,为了能够从市埸上可以供应的磁头中选择出适当的磁头来,必须计算必要的规格,放大器的输出一定要能够驱动两个并联的双稳多谐振盪器。
Drums and tapes are often used as storage or intermediate storage of digital information. Read the information on the tape or drum via the head and amplifier for use. This article is limited to the discussion of transistor-based sense amplifiers. The analysis and design steps are given to test a standard amplifier driven by a regenerative read head with an open-circuit output of more than 2 millivolts. The amplifier can drive three parallel bistable multivibrator, the frequency range is 2 ~ 400 MHz. The operating temperature range is 0 ° C to + 70 ° C. The output pulse rise time is less than 1 microsecond. Tapes and drums are commonly used as storage or intermediate storage elements in computers. The information stored digitally on the belt or drum can be reused by the head and amplifier. In this paper, the design of a sense amplifier using a general transistor is investigated. The general requirement is that in order to be able to select the proper head from the available heads in the market, the necessary specifications must be calculated and the output of the amplifier must be capable of driving two shunt multivibrators in parallel.