Typical analysis of the constant-current resistance and the output current error, The writer gives the analysing process by means of operational amplifier.
从恒流源内阻和形成输出电流误差两个方面，给出用运算放大器构成压控恒流源的分析结果。
The operational performance of DC bridge circuits(including constant voltage and constant current) was analyzed.
对直流（包括恒压和恒流）电桥的工作性能进行了分析。
The composition and operational principle of an automatic frequency con version constant pressure water supplying system based on PLC and frequency convertor with serial communication are introduced.
介绍了一种基于PLC和变频器采用串行总线方式通讯的变频恒压供水系统的构成和工作原理。
Design and realization methods of integrated operational amplifier feedback constant current power in semiconductor laser reliability evaluation system are introduced in this paper.
介绍一种已成功应用于半导体激光器可靠性评估系统的负载浮置的集成运放反馈型恒流源的设计与实现方法。
The diffusion current is measured using transistor and digital ammeter instead of operational amplifiers, and the Boltzmann constant is obtained accurately.
在不使用运算放大器的情况下，直接利用晶体三极管与数字式电流表测出扩散电流，可以得到较为准确的玻尔兹曼常量。
It also introduces the composition and operational principle of a changing frequency and constant pressure water supplying system.
同时介绍了变频恒压供水系统的构成和工作原理。
It also introduces the composition and operational principle of a changing frequency and constant pressure water supplying system.
同时介绍了变频恒压供水系统的构成和工作原理。
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