电路

The non autonomy statement equation basic circuit was established in this paper,and the conservation electric charge equation was worked out basing the periodicity of its stable solution.

对包络检波的基本电路建立非自治状态方程，并根据其稳定解的周期性，推导出电路的电荷量守恒方程，并通过假设的条件近似和简化方程。

The paper describes the work process of chargeable switching power supply, control and main circuit of inverse change.

设计了本系统中所采用的充电器、控制器、逆变主电路，对电路的结构和有关参数进行了设计、计算。

Like the transformer coupled circuit, the choke feed in the parafeed circuit allows the output to swing above and below the power supply voltage.

和变压器耦合电路一样，旁馈电路中地扼流圈也能容许输出在高于和低于高压的情况下波动。

The reliability of the circuit has been examined through the imitation and check to the circuit board.

通过对电路的仿真和电路板的检测，证明了硬件电路的可靠性。

To the hardware, what circuital design and circuit use the chip arriving at to have been in progress introduces the main body of a book.

本文对硬件电路的设计和电路所用到的芯片进行了介绍。

Have been a keyboard control circuit mainly and have demonstrated the circuital principle and function, and have shown LED principle go along introduce that.

主要是键盘控制电路与显示电路的原理和功能，并对LED显示原理进行了介绍。

Mechanical system includes mechanical structure design of exploring head, measuring and controlling box. Circuit system includes the least system of S3C44BOX automatic gathering system、 man- machine vision system、 circuital schematic diagram and PCB design of communications system.and completion of correlative function drive software.

机械系统包括测头和测控箱的机械结构设计，电路系统设计包括S3C44BOX的最小系统、自动采集系统、人机界面显示系统和通信系统的电路原理图和PCB设计，以及相关功能驱动软件的编制。

14 UNIT, LINEAR DESIGN - A unit employing a branch circuit frequency transformer design where operation is not dependent on circuity ."

" 2.14 UNIT， LINEAR DESIGN——使用支线电路频率变压器设计，其运行独立于电路系统的电源单元。"

Detail programmable logic design circuity is presented. The circuitry of each chute is separated and similar, which includes impute module, storage module, delay module, serial communication module comparing module and output module, etc.

给出可编程逻辑器件的具体电路设计，PLD的每路信号处理电路独立且相同，共划分输入模块、存储模块、延迟模块、串行通讯模块、比较模块、输出模块等6个模块。

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。

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