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1)  V/F Device
V/F器件
2)  F/V converter
F/V转换器
1.
The threshold voltage is set by output channel comprised of pulse generator,photoelectric coupler and F/V converter,and the detection result is input through photoelectric coupler.
利用可变频脉冲发生器、光电耦合器和F/V转换器组成输出通道 ,设定阀值 ;检测结果由光电耦合器隔离输入 ;阀值设定精确、随意、抗干扰能力强 ,适用于电火花加工数控系统中放电状态检测的实
3)  V/F converter
V/F变换器
1.
In order to solve the HVDC bus voltage measurement parameters,the output analog voltage signal of DC voltage transformer was turned into pulse-frequency signals by High-precision V/F converter,which go through the optical transmitter module,optical fiber and optical receiver modules to achieve the function of pulse frequency signal optical transmission.
为了解决高压直流输电母线的电压参数测量问题,采用高精度V/F变换器将直流电压互感器的输出模拟电压信号转换成脉冲频率信号,再通过光发送模块、光纤和光接收模块实现脉冲频率信号光纤传输功能。
2.
The paper discusses the accuracy offset when using the timer to sample periodical signals in common A/D transform circuit composed of V/F converter,and proposes an improved circuit which adopts pre- positve signal regulation to makes the change of input signals consistent with that of the period of output signals.
探讨了V/F变换器组成的A/D转换电路中,采用定时器对周期信号采样精度出现偏差的问题,提出一种改进的V/F变换器组成的A/D转换电路,该电路采用前置信号调理电路,使得输入量的信号变化趋势与V/F变换器输出信号周期的变化趋势一致。
4)  V/F convertor
V/F转换器
1.
the application of V/F convertor of LM331 in the A/D convert circuit is mainly introduced in this paper ,this circuit is cheap in price ,is simple in peripheral equipment and applies to the field which the demand of speed is not too high .
本文主要介绍一种应用V/F转换器LM331实现A/D转换的电路,本电路价格低廉,外围电路简单,适合应用在转换速度不太高的场合应用。
2.
High precision of data acquisition of accelerometers signal is achieved with V/F convertors.
V/F转换器将加速度计输出的模拟信号转换为脉冲量,FPGA采集脉冲量并转换得到自标定模型所需数字量。
5)  V/F converter
V/F转换器
1.
This paper introduces a data acquisition system based on the PIC16F73 SCM,where the V/F converter LM331 chip is used as an A/D converter.
给出了一种应用V/F转换器LM331芯片组成的A/D转换电路,通过PIC16F73单片机实现数据采集,介绍了采集系统的硬件构成与软件框图和相关程序。
2.
A the pressure data acquistion system based on AT89C51 MCU and LM331 V/F converter is introduced.
介绍一种基于单片机AT89C51和V/F转换器LM331的压力数据采集系统,该系统以AT89C51单片机为核心,实时测量由压力传感器MPXV5004G检测的压力。
6)  LM331 F/V convert
LM331-F/V转换器
补充资料:[styrene-(2-vinylpyridine)copolymer]
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性质:学名苯乙烯-2-乙烯吡啶共聚物。微黄色粉末或透明小颗粒晶体。无臭,无味。不溶于水,溶于酸、乙醇、丙酮、氯仿。有抗水、防潮性能,适用于多种药片的包衣等。

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