微分电路

Because any reports on the active control of rotating disk haven't be seen in China up to now, and this experiment research is important, so the complete set of active control system of rotating disk are built independently. The push-pull type electromagnet is applied to control the vibration of the circular disk. The power amplifier circuit that can respond to wide scope in frequency from DC to AC is designed by improving the existing circuit. The sensor signal is first low-pass filtered, then the proportional control plus the differential control circuit easy used in practice are applied to finish the more effective control. The electromagnetism shield is used as possible to decrease the signal disturbance from the electromagnet to eddy sensor.

考虑到目前国内尚未见到有关旋转圆盘振动主动控制的相关报导以及实验的重要性，自行设计制作了一整套旋转圆盘振动主动控制系统：提出并采用推拉型电磁作动器来控制圆盘的振动；在改进现有电路的基础上，自行设计了具有较理想特性的驱动电磁作动器的功率放大器；根据实际控制环境的特点，设计了先进行低通滤波，再采用比例和实用的近似微分电路构成的控制器，并采用了电磁屏蔽来减小电磁铁对传感器的干扰，以实现更有效的控制。

This paper theoretically studies the design of the negative coefficient fourfold differential circuit formed by single operational amplifier.

从理论上研究了单块集成运算放大器构成的负系数四次微分电路的设计，着重分析了该电路的直流误差，并给出了电路的设计公式。

This paper deals with a simple method for measuring the acceleration of the picker by means of an RC differential circuit composed of resistor and capacitor.

本文提出用电阻与电容组成的RC微分电路来测量皮结和梭子的加速度的方法。

A differential circuit has been designed and applied to measure the second derivative of \%I-V\% characteristic on lin.

在相同的放电条件下，使用自行设计的微分电路，对探针特性二次微商进行在线测量。

Differential circuit, the common progress of learning!

详细说明：微分电路，共同学习共同进步！

Next, the differentiating circuit that makes from the C5 of classics of square wave signal of the 7 output citing a base of IC1b, R10, make the pointed pulse that losing alternate with will be become after differential processing.

接下来，从IC1b的7引脚输出的方波信号经C5、R10组成的微分电路，进行微分措置后将成为正负相间的尖脉冲。

The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

采用时间增益补偿技术，补偿超声波在空气中的衰减，减少回波信号的起伏；由有源全波整流电路和微分电路等组成峰值时间检测电路，可正确检测回波的峰值到达时间。

As required by the working features of monostable flip flops, the design idea of monostable flip flops with RC circuit as the timer unit is explained by using the transient phenomenon of signal changing resulted from the differential circuit or from "the static race hazard of signal", and by linking the storage principle of signal feedback.

根据单稳态触发器工作特点的要求，以RC电路为定时单元，利用微分电路及"信号静态竞争冒险"等信号瞬变现象，并结合信号反馈存贮的原理，阐明单稳态触发器的设计思想。

Measurement results indicate that, by changing the control bits in the gain control circuit and differential circuit, the 3-step peak-to-peak voltage amplitudes are 240, 170 and 115 mV and the center frequency of the impulse can be tuned from 3.2 to 4.1 GHz.

测试结果得到通过改变增益控制和微分电路中的控制位，3级输出脉冲电压峰峰值分别为240 mV、170 mV和115 mV，频谱中心频率可调范围为3.2 GHz 至4.1 GHz。

The mutual inductor of the item is used to test vector differential value of protected circuit of personal electric shock is up to or over leakage operating current, the tripper will act and cut off so that the item will take effect of protection.

该项目的互感器用来检测值向量微分电路保护个人触电由以上运行泄漏电流旅行者的行为将被切断，使项目生效的保障。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐