Section 4
Operational Amplifiers
After the invention of the transistor, solid-state operational amplifiers were introduced as integrated circuits.
在发明了晶体管后,固态运算放大器被 引入成为集成电路.
Section 4
Operational Amplifiers
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The analog amplifier consists of a basic difference amplifier, implemented by feedback and other compensating amplifying circuits to give linear response, stability, freedom from drift, and other desirable properties.
对于大多数要求放大和 很多测量和控制应用的场合,具有反馈电路 的简单的运算 放大器将满足设计者的需要.
Section 4
Operational Amplifiers
The availability of operational amplifiers as integrated circuits in the form of dual in-line packages (DIPs) or in other compact forms makes the solution of analog signal problems analogous in many respects to the solution of digital logic problems, that is, through the interconnection of integrated circuits. 以双列直插式封装或以其它密封形式出现的 运算放大器做成的集成电路的可用性使 模拟 信号问题在很多方面类似数字逻辑问题那样 得到解决,也就是通过集成电路的 相互连接 得到解决. Operational Amplifier Fig.2-5 shows the symbol for an operational amplifier. There are two inputs: the one marked with a plus sign is the noninverting input, and the one marked with a minus sign is the inverting input.
我们要求它具有复杂性, 因为运算放大器放大直流以及交流信号,在 放大阶段不 允许有容性耦合. Thus it is more difficult to isolate the long-term changes that arise from variations in temperature and power-supply voltage and from other effects that cause the output voltage to drift. 因此我们很难 隔离由温度的变化和电源电压以及其它引起 输出电压漂移的因素 而产生的长效变化.
Now operational amplifiers are used to make high-quality, low-power analog amplifier, and it is possible to avoid designing individual transistor amplifier stages for many application.
现在运算放大器被用来 制造高品质,低功率的模拟放大器,因而我 们可以在很多应用 场合免去了设计单个的晶 体管放大器的过程.
For most amplifying purposes and for many measuring and control applications, simple arrangements of operational amplifiers with feedback circuits will meet the designer's needs.
Introduction Operational amplifiers are high-gain difference amplifiers, which were perfected during World War II. They became the foundation of analog computers, at one time analog computers were called "differential analyzers" because they are used to solve differential equations. 运算放大器是一种高增益的差分放大器, 它在第二次世界大 战期间得到完善,并成为 模拟计算机的基础. 由于运算放大器被用来 解差分方程,因此一段时期内模拟计 算机被 称为"差分分析器". Operational amplifiers are also the basis of many important instruments. 运算放大器也是很多 重要仪器的主要组成部分.
Chapter 2
Electronics
Section 4 Operational Amplifiers
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New Words and Expressions Translation of Long Sentences
Exercises
End
Section 4
Operational Amplifiers
模拟放大器由基本的差分放大器组成, 通过反馈以及其它补偿放大电路实现线性反 应 ,稳定性,来自漂移的自由度以及其它 我们所期望的性能.
The complexity is required because operational amplifiers amplify dc as well as ac signals, capacitive coupling between amplifying stages is not permitted.