- US Navy - Electronics Technician - 9 - Electro-Optics
标签： Electro-Optics Electronics Technician Navy
上传时间： 2013-12-23
上传用户：shizhanincc
OPTOElectroNICS CIRCUIT COLLECTION AVALANCHE PHOTODIODE BIAS SUPPLY 1Provides an output voltage of 0V to +80V for reverse biasingan avalanche photodiode to control its gain. This circuit canalso be reconfigured to supply a 0V to –80V output.LINEAR TEC DRIVER–1This is a bridge-tied load (BTL) linear amplifier for drivinga thermoelectric cooler (TEC). It operates on a single +5Vsupply and can drive ±2A into a common TEC.LINEAR TEC DRIVER–2This is very similar to DRIVER–1 but its power output stagewas modified to operate from a single +3.3V supply in orderto increase its efficiency. Driving this amplifier from astandard +2.5V referenced signal causes the output transistorsto have unequal power dissipation.LINEAR TEC DRIVER–3This BTL TEC driver power output stage achieves very highefficiency by swinging very close to its supply rails, ±2.5V.This driver can also drive ±2A into a common TEC. Operationis shown with the power output stage operating on±1.5V supplies. Under these conditions, this linear amplifiercan achieve very high efficiency. Application ReportThe following collection of analog circuits may be useful in Electro-optics applications such as optical networkingsystems. This page summarizes their salient characteristics.
上传时间： 2013-10-27
上传用户：落花无痕
机电类比法是一种把机械量通过一定的计算等效类比为电量的方法，其在对电子机械系统的分析中应用非常广泛。它能够把一个较复杂的机械系统类比为我们熟知的电路系统来进行分析，从而使问题的分析得到简化。本文通过对振弦式传感器的分析介绍了机电类比法，并对使用电路进行了相关的分析。 Summary：The Electromechanical analogy is assort of analysis which is to analogize the mechanical system by using circuit system , it applied widely in the filed of analysis the Electronic-mechanical system. The analysis can take a complex mechanical system analogous to a circuitry that we well-known, which can simplify the problems. In the paper, the Electro-mechanical analogy method is briefly introduced by analysis the vibrating wire sensor，and have a correlation analysis about the circuit we used.关键词： 机电类比法 振弦式传感器 频率 振荡 反馈Keyword：Electro-mechanical analogy method，vibrating wire sensor，frequency, oscillation, feedback 0 引言振弦式传感器是属于频率式传感器的一种。所谓频率式传感器就是能直接将被测量转换为振动频率信号的传感器，这类传感器一般是通过测量振弦、振筒、振梁、振膜等弹性振体或石英晶体谐振器的固有谐振频率来达到测量引起谐振频率变化的被测非电量的目的，其也称为谐振式传感器[1]。在分析该类传感器中，由于其涉及到频率，就容易让人联想到在电子技术中接触到的RLC振荡电路。因此可以尝试着用类比的方法使之对应起来分析,即机电类比法分析。
上传时间： 2013-11-16
上传用户：paladin
对微机电系统(Micro Electro mechanical systems，MEMS)组装与封装工艺的特点进行了总结分析，给出了MEMS组装与封装设备的研究现状。针对MEMS产业发展的特点，分析了面向MEMS组装与封装的微操作设备中的工艺参数优化数据库、快速精密定位、模块化作业工具、快速显微视觉、柔性装夹和自动化物流等关键技术。在此基础上，详细介绍了研制的MEMS传感器阳极化键合设备和引线键合设备的组成结构，工作原理，并给出了组装和封装试验结果。最后，指出了MEMS组装与封装技术及设备研制的发展趋势。
上传时间： 2016-07-26
上传用户：leishenzhichui
Free Space Optical Communication (FSOC) is an effective alternative technology to meet the Next Generation Network (NGN) demands as well as highly secured (mili- tary) communications. FSOC includes various advantages like last mile access, easy installation, free of Electro Magnetic Interference (EMI)/Electro Magnetic Compatibil- ity (EMC) and license free access etc. In FSOC, the optical beam propagation in the turbulentatmosphereisseverelyaffectedbyvariousfactorssuspendedinthechannel, geographicallocationoftheinstallationsite,terraintypeandmeteorologicalchanges. Therefore a rigorous experimental study over a longer period becomes significant to analyze the quality and reliability of the FSOC channel and the maximum data rate that the system can operate since data transmission is completely season dependent.
标签： Communication Optical System Space Free
上传时间： 2020-05-27
上传用户：shancjb
Static electricity is the most ancient form of electricity known to humans. More than 2000 years ago, the Greeks recognized the attraction between certain mate- rials when they were rubbed together; indeed, the word electricity comes from the Greek elektron, which means amber. During the seventeenth and eighteenth centuries, several key experiments were conducted to understand and measure static electricity. But the discovery of Electromagnetism and its formidable break- through has rapidly outgrown interest in static electricity. Even today, where the industrial applications of static electricity are not insignificant, they cannot compare with those of Electromagnetism and Electrodynamics.
标签： Understand Discharge Electro Static
上传时间： 2020-06-05
上传用户：shancjb
The challenges associated with the design and implementation of Electro- static Discharge (ESD) protection circuits become increasingly complex as technology is scaled well into nano-metric regime. One must understand the behavior of semiconductor devices under very high current densities, high temperature transients in order to surmount the nano-meter ESD challenge. As a consequence, the quest for suitable ESD solution in a given technology must start from the device level. Traditional approaches of ESD design may not be adequate as the ESD damages occur at successively lower voltages in nano-metric dimensions.
标签： Protection Circuit Device Design ESD and
上传时间： 2020-06-05
上传用户：shancjb
For more than three decades, Micro Electro Mechanical Systems (MEMS) have steadily transitioned out of research labs and into production forming a more than $10 billion market [1]. MEMS devices such as accelerometers, pressure sensors and microphones, to name a few, have seen immense utilization, particularly in the consumer Electronics market, because of their compact sizes and minute power consumptions. In addition, these devices benefit from batch fabrication, which has enabled year-over-year reductions in cost [2]. In recent years,
上传时间： 2020-06-05
上传用户：shancjb
Micro-Electro-Mechanical Systems (MEMS) are miniature systems composed ofintegratedelectricalandmechanicalpartstosenseand/orcontrolthingsonaµmscale. The concept of MEMS is attributed to Richard Feynman’s famous talk on December 29th, 1959 [2,3]. Dr. Feynman foresaw many aspects of future MEMS development with his insight in microphysics. In particular, material properties in the µm scale are differentfrombulkpropertiesandthescalingdownofintegratedcircuits(IC)fabrication technology has been a major driving force of MEMS development.
标签： Performance High MEMS RF
上传时间： 2020-06-05
上传用户：shancjb
台达的资料，给用的着的同学们。早期当各家 PLC 开发商纷纷建立自己的编程语言时，其各自不同的编程方式，对于用戶而言无疑是一个相当大的负担；有鉴于此，由国际组织 I.E.C.（International Electro-technical Commission）所制定与推动的 IEC 61131-3 标准便由此应运而生。其主要的特色在于统整各家的编程特点，并考虑用戶的背景与习惯，而规范了一个可让各家厂商与用戶共同依循的标准，并可让符合 IEC61131-3 标准的程序代码具备相当高的可读性与兼容性。以下是关于 IEC 61131-3 的简述。
标签： plc
上传时间： 2022-02-20
上传用户：lw125849842
