电路的

By studying the internal structure and working principle of 555 timer, this paper introduces three typical circuits----Schmitt trigger, Bistable multivibrator and Astable multivibrator----which are composed by 555 timer. Furthermore, it explores the various applications of 555 timer in circuit designing through the expansion of the circuits and eventually same experience and methods offers in circuit designing by using 555 timer.

本文通过研究555定时器的内部结构和工作原理，介绍了其组成的施密特触发器，单稳态触发器和多谐振荡器等三个典型电路，并通过这些电路的扩展，探讨了555定时器在电路设计中的各种应用，由此得出用555定时器设计电路的经验和方法。

Termination to avoid reflection is an analogous technology, but it is today an essential technology for high speed digital circuits which should be considered as distributed constant circuits.

终端匹配避免反射是模拟技术，但今天也是高速数字电路的关键技术，高速电路被认为是分布式常数电路。

Digital circuit experiment teaching is very important in the electrotechnics and electronics series experiments teaching.

一、我校数字电路实验教学发展的主要历史沿革杭州电子科技大学是浙江省最早开设数字电路的学校之一，早在80年代就开展有关数字电路CAD的教学和科研，同时开设数字电路实验，所处的电工电子实验中心为国家级电工电子实验示范中心，其水平处于国内领先地位。

The thesis focuses on the circuit design and parameter selection, including the power circuit, control circuit and drive circuit of the front-end converter. Apart from that, for the load-end converter, the design and critical components selection of the traditional full-wave rectification and synchronous rectification are presented.

本文设计和确定电路的各种参数，包括前端变换器的功率电路、控制电路和驱动电路，对于负载变换器则给出了普通全波整流和同步整流的滤波器设计和一些关键器件的选择。

The difficulty is the high voltage of the trigger circuit because the trigger circuit is parallel with the main circuit.

RSD触发电路的难点是触发电路与主电路的并联结构导致的触发电路高压的问题。

Including the low-pass filter circuit and Operation Transconductance Amplifier circuit design.

包括低通滤波电路，跨导运算放大电路电路的设计。

By comparison and Fourier analysis of the waveshapes of the input current with different values of the inductor in the experiment, the valuable references are attained in the same type circuit design.

所以对电感值的计算就显得尤为必要。Boost型APFC电路中的升压电路部分不同于传统的Boost电路。传统Boost型电路的输入电压是直流电，在设计电感值时比较容易。

Put forward an algorithm called PPSCRIPT (Parallel Pseudo Sequential Critical Path Tracing) for sequential circuit fault simulation, and implemented the algorithm in C language to improve the efficiency of sequential circuit fault simulation.

在时序电路的故障模拟方面作者提出了并行时序电路伪临界路径跟踪算法PPSCRIPT，并用C语言编程实现了该算法，使时序电路的故障模拟效率提高，时序电路的故障模拟是测试中期的问题。

In this paper, we present a low phase-noise oscillator circuit. The circuit of an inductor-capacitor tank oscillator is made on the chip. The 0.25μm complementary metal-oxide-semiconductor process parameter of Taiwan Semiconductor Manufacturing Company are entered into Advanced Design System software to simulate an LC tank oscillator circuit. Some circuit technology and an improved method for phasing noise are introduced.

此文提出一个低相位杂讯振荡电路，这电路完全实现於晶片上的电感电容压控振荡器，我们是把台湾积体电路的0.25μm的CMOS（互补式金属氧化物半导体）制程参数放入Advanced Design System模拟软体中模拟，在本文中我们介绍了一些电路技术和改善相位杂讯的方法。

A method to generate the bias voltage of infrared focal plane array is proposed,which use cascade weighted-capacitor network to scale charge on them.

以上研究证实了这种可集成在红外焦平面读出电路上的偏置电压产生电路是可行的，为下一步直接设计并制造包含偏置电压产生电路的焦平面读出电路芯片打下了坚实的基础。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。