前置放大电路设计了量程自动切换的电阻反馈式两级放大。
A range automatic transfer is designed for the preamplification system with resistance feedback.
本系统具有从低真空到高真空，气压测量范围宽、量程自动切换功能，并能实现对真空度的实时控制。
The system's measuring range can be automatically switched from low vacuum to high vacuum, and it has a wide measuring range.
该仪器具有测量精度高，自动量程切换，电导率值直读显示，操作简单等优点。
The instrument has high measurement accuracy, automatic switching range, the conductivity value of direct reading, the advantages of simple operation.
提出一种自动量程切换电压测量系统的设计方法，该系统基于程控增益放大器器件，使用单片机控制其增益实现量程的自动切换。
It presents a system of voltage measurement with self-scale, based on the program control amplifier controlled by the single chip computer.
介绍了一种由at89c 2051单片机实现的自动切换量程峰值电压检测系统。
A Peak voltage detecting system implemented by AT89C2051 single chip computer is introduced.
介绍了一种由at89c 2051单片机实现的自动切换量程峰值电压检测系统。
A Peak voltage detecting system implemented by AT89C2051 single chip computer is introduced.
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