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The pleunm anti-static insulated material housing prevents short circuit led by the contact of welding spot and the metal channel of word sign. At the same time, the circuit uses particular constant current design and lightning arrester. Silicon rubber leads between modules of anti-aging and anti-cracking guarantee the long-term work in bad environment of open area while the low resistance of lead reduces the affection to the emitting brightness of LED by voltage drop.

其外壳采用阻燃防静电绝缘材料,可防止 PCB焊点与金属字槽壳的接触而产生短路,同时电路采用独特恒流电路设计及雷电吸收装置,模组间连接线采用软硅橡胶导线,在恶劣的户外恶劣环境下长时间使用,导线不会老化脆裂,同时导线内阻比较小,降低压降对LED发光亮度的影响。

The asymmetric stripline is widely used in LTCC microwave integrated circuit system. Different kinds of discontinuity are often encountered in the circuit design, such as open circuits, steps, right-angle bends, T-junctions and so on. This paper successfully transplantes the equivalent circuit model of microstrip line discontinuity to the asymmetric stripline so as to deal with T-junction discontinuity and the branch-line coupler constructed by parts with various discontinuity. Compared with numerical results, the average error of S parameters is less than 2%.

偏心带状线广泛应用于LTCC微波集成电路系统中,其电路设计过程中也经常会遇到诸如开路端、阶梯、直角拐角及T型接头等各种不连续性问题;该文成功地将原有的微带线不连续性等效电路模型移植到偏心带状线上,从而分析了其T型接头不连续性和由其不连续性部分组成的电路组件分支线耦合器;与数值计算结果相比,其S参量的平均误差小于2%。

Chapter three (the methods of generating chaotic signal and its applications): In this chapter firstly the mechanism that a simple kinetic system, subsection linear map system, can generate chaotic phenomena is affirmed, the characteristics of correlation function of the chaotic signal generated by this system are simulated, on this basis a simple applicable method for generating chaotic signal is given; secondly some typical circuits generating chaotic signal are designed, also use operational amplifier to design a third -order autonomous circuit with chaotic dynamics. The basic mechanism and typical structures of chaos in the application of communication are introduced systematically and a simple method is provided for generating pseudo random code signal; At last Chaotic signal is applied into the analysis of system characteristic.

第三章(混沌信号产生方法及其应用)首先针对一类简单动力学系统——分段线性映射系统能够产生混沌现象的机理及由该系统所产生的混沌信号的自协方差函数特点进行了证明和计算机仿真,提出了软件产生混沌信号的一种实用方法;其次分析讨论了几种能够产生混沌信号的典型混沌电路,提出了用运算放大器与阻容元件实现三阶自治混沌电路的基本原理;概述了混沌在通信领域中应用的基本原理和典型结构,提出了产生伪随机码信号的一种简单方法;最后将混沌信号用于系统的特性分析中。

Then discuss the power drive circuit and the logic control circuit in detail.

并详细介绍了功率驱动电路及逻辑控制电路。

This paper gives detailed discussion on the design and the implementation of the personal minitype electrocardiographs main control board. It includes such a few circuit modules as MCU, memorizer, LCD control, touch panel control and so on.

本论文对"个人微型心电图仪"主控板上的主要电路模块的设计思想及实现原理进行了较详细的叙述与讨论,包括微控制器、存储器、液晶显示与控制、触摸屏控制等电路模块。

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。

The circuits, including 4 value TTL, NOR gate and NAND gate and AND OR NOT gate and five state gate, are designed by use of bipolar transistors. They have good I/O characteristics, great load capacity and robust noise immunity, and their noise margin may reach±0.6V.

采用双极型晶体管设计出了四值TTL"或非"门、"与非"门和"与或非"门电路及五态门,这些电路均具有较好的输入输出特性、较强的负载能力和抗干扰能力,噪声容限可达到± 0 。6V。

A practical protecting circuit for overcurrent and overvoltage and its operation principle are described in detail.

详细介绍了一种实用的过流过压保护电路及工作原理,该电路具有可靠性高、反应快等特

This paper introduces a new 4-bit full parallel ADC circuit design for low power and high-speed CMOS circuits.

本篇论文介绍了一种新型的4位全并行模数转换电路的设计,应用于低功率及高速CMOS电路中。

Based on detailed analysis for the principle of 8255 programmable parallel interface working...

在详细分析8255可编程并行接口芯片工作方式2原理的基础上,以采用8031CPU构成PC机智能接口卡为例,论述了采用两片8255实现PC机与智能接口卡间并行通信的方法,给出了具体接口电路,并详细分析了该接口电路的工作原理及特点。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。