电路

The dimmer control circuit comprises: three-end bidirectional controllable silicon switch element, comprising grid and turned on by trigger signal of the grid, connecting to AC power supply through lamp load; and a first variable resistor, possessing adjustable resistance and regulating lamp brightness by following modes: changing resistance value of the first variable resistor, changing phase of the trigger signal corresponding to AC voltage waveform, prolonging or shortening turning-on time bucket of three-end bidirectional controllable silicon switch element, thereby changing current provided to the lamp load.

一种调光器及调光控制电路，该调光控制电路包括：三端双向可控硅开关元件，其通过灯负载连接到交流电源，其中，三端双向可控硅开关元件具有栅极，并且由输入到所述栅极的触发信号开启；以及第一可变电阻器，其具有可调节的电阻值，其中，通过以下方式来调节灯负载的亮度：改变第一可变电阻器的电阻值，改变所述触发信号相对于交流电压波形的相位，延长或缩短所述三端双向可控硅开关元件的开启时间段，从而改变了提供给所述灯负载的电流。

This paper introduces mainly the circuit design of the Laser velocimeter system; include emission module, pulse drive circuit, receiver module, computer interface and controlling software.

本文主要研究工作是激光测速系统中的硬件电路设计，其中包括发射模块、脉冲驱动电路、接收模块、计算机接口和上位机控制软件五个部分。

The volt-ampere characteristic of the circuit is similar to that of UJT.

利用它的负电阻特性可以使振荡器，定时电路，锯齿波发生器以及触发器等电路大为简化。

In the absence of external feedback circuit by measuring the voltage amplification.

在没有外界反馈电路时所测出的电压放大倍数。Auo越高，所构成的运算电路越稳定，运算精度也越高。

The design of a kind of low-frequency power amplifier was given, including a voltage amplification circuit, a display circuit based on FPGA, and a BEF filter.

摘 要：给出了一种低频功率放大器的设计制作过程，包括电压放大电路、FPGA控制的显示电路、带阻滤波器等部分。

Because the OCL electric circuit selects the conductive coupling method, for the guarantee circuit work is stable, therefore needs to have enough high voltage amplification factor.

由于OCL电路采用直接耦合方式，为了保证电路工作稳定，故需要有足够高的电压放大倍数。

In order to carry constant current bias amplifier and to raise the precision of the differential amplifier of the voltage amplification stage, an overly highly precise constant current circuit is adopted as the bias circuit used as criteria of operation, and the supply voltage variation supression ratio is raised much more.

为了执行恒流偏置放大器和提高精度的差分放大器的电压放大阶段，过于高精度恒流电路采用为偏置电路用来作为标准的运作，以及电源电压的变化抑制比筹集更多。

This eye sensor consists mainly of light activated triode and voltage comparator is composed of circuit, drive circuit "H" bridge.

此眼球感应器主要由光敏三极管和电压比较器组成的比较电路、"H桥"驱动电路组成。

The programme through the transformer transformer, through the rectifier circuit filter circuit which will be AC into DC, and the adoption of the regulation by regulators more stable voltage, input voltage regulator when it can only be fixed when the voltage difference within the scope of regulation of the output voltage, and therefore out of voltage difference in the scope of automatic Diaodang, it is through the two comparator output voltage and the reference voltage comparison, and through the counter counting function control relay controller The input to determine the size of the output voltage at which the scope, and then automatically Diaodang.

该方案是通过变压器变压，再经过整流电路、滤波电路进而将交流电变为直流电，在通过稳压器的稳压得到较稳定的电压，由于稳压器当输入电压固定时只能在它的电压差范围内调节输出电压，、所以要在调出电压差的范围时自动调档，这是通过两个比较器将输出电压和基准电压进行比较，再通过计数器的计数功能控制继电器控制器的输入情况来判断输出电压的大小在哪个范围，然后进行自动调档。

Design and optimization methods of low dropout voltage regulator are studied through the analysis of their topology and operational process.

研究了电容式电荷泵电路的基本类型和动作原理，建立了一个理论模型，给出了电荷泵电路的性能评估方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了