Sound is simply an airborne version of vibration. The air which carries sound is a mixture of gases. In gases, the molecules contain so much energy that they break free from their neighbors and rush around at high speed. As Figure 1.1(a) shows, the innumerable elastic collisions of these high-speed molecules produce pressure on the walls of any gas container. If left undisturbed in a container at a constant temperature, eventually the pressure throughout would be constant and uniform.
标签： Engineering Audio
上传时间： 2020-06-09
上传用户：shancjb
I can remember buying my first electronic calculator. I was teaching a graduate level statistics course and I had to have a calculator with a square root function. Back in the late 1960s, that was a pretty high-end requirement for a calculator. I managed to purchase one at the “educational discount price” of $149.95! Now, I look down at my desk at an ATmega2560 that is half the size for less than a quarter of the cost and think of all the possibilities built into that piece of hardware. I am amazed by what has happened to everything from toasters to car engines. Who-da-thunk-it 40 years ago?
上传时间： 2020-06-09
上传用户：shancjb
This reference design describes the design of a 3-phase AC induction vector control drive with position encoder coupled to the motor shaft. It is based on Motorola’s DSP56F805 dedicated motor control device. AC induction motors, which contain a cage, are very popular in variable speed drives. They are simple, rugged, inexpensive and available at all power ratings. Progress in the field of power electronics and microelectronics enables the application of induction motors for high-performance drives, where traditionally only DC motors were applied. Thanks to sophisticated control methods, AC induction drives offer the same control capabilities as high performance four-quadrant DC drives.
标签： Reference Designer Manual Phase DRM 023 AC
上传时间： 2020-06-10
上传用户：shancjb
欧母龙PLC例程PLC控制器源码255个合集:1600T俄罗斯压力机.rar200吨压机程序 omron 的机子C系列的.rar3MK136旧磨床现程序.rar3电机延时控制启停.rar5V编码器信号如何接入CP1H高数计数案例.rar6路抢答器源码.rar902002 OMRON.rarASCII Generic Protocol Macro Object Code.zipASCII Generic Protocol Macro.zipC3电枢异物吸引.rarCalendar Calculation.zipcarbon.rarCompact Flash Memory Write.zipCounter Multiplex.zipcp1h 高速计数触发中断注意点.rarcp1h-x40用在非标饮料线上的程序,有注解.rarCP1H与爱默生温控模块的通讯程序.rarCP1L and CP1H EasyModbus FB.zipCPM1A编写的赞扬15T立式注塑机.rarCPM2A Interupt High Speed Counting Sample.zipCPM2A自身时钟六个时间段触发程序.rarCQM1 Host Link Master.zipCQM1H 21的例子程序，有温度压力等PID控制。.rarCQMaster.swp.zipCS CJ CP NSJ password set.zipCS1 C Mode Hostlink.zipCS1-CJ1 Floating Point to Fixed Point Conversion for HMI.zipcub.rarCX-Programmer Ver.5 Introduction Guide R120-E1-01..zipCX-Programmer Ver.5 Introduction to Function Blocks Guide R121-E1-01.zipC_Mode_Hostlink.zipDeviceNet Explicit Message Example.zipdieban.rarEasy to use Modbus RTU Master for CP1L CP1H CJ1 CJ2 CS1.zipExample of Using Daylight Saving FB's.zipExample Scale Meter Protocol.zipFB Calculate Day Of Week.zipFB Day light savings function block.zipFB Extract Time Date into SecMin Hr Day Mth Yr.zipFB Scale with parameters.zipGKF1250离心机CXP.rargkf1250离心机cxpgkf离心机omron.rarJH21-200程序.rarLED液压机.rarlogging+ filewrite.ziplpr-des.rarModbus Protocol Macro Object Code.zipModbus Protocol Macro.zipModbus RTU Sample Code CJ1-SCB.rarModbus TCP Client using FB's.zipOmron CS1 Sequencer.zipOMRON E6CP绝对值编码器使用实例。编码器为8位格雷码输出.rarOmron Modbus Slave Ladder.zipOmron Plc 变频一带三例程.rarOMRON PLC编程示范.raromron--MOV傳送指令.raromron-cs1g-h-cpu42日本机的程序.rarOmron_CJ2_to_AB_EIP_Tag_Datalink_Example.rarOMRON接驳台.rarOMRON控制2伺服.rarOMRON温度，压力模拟量输入程序.rarOMRON照明设备程序.raromron的PLC案例程序.rarOMRON程序举例.rarOMRON程序举例2.rarOMRON纸病分析系统-PLC程序(CJ1G).zipomron脉冲输出到驱动器的程序.rarPCB 沉铜线程序.rarPID温度控制的PLC程序设计实例.rarPinstamp.zipPLC Clock adjustment with screen.zipPLC锰钢程序cpm2a.zipPolls and Writes setpoints to E5CK Process Controller - E5CK.swp.zipPRO9连拉.rarProcess states sequence logics.zipQuadrature Input for Standard CPM1A DC Inputs.zipRandom Number Generator.zipScaling in CJ1 CS1 PLC's.zipSMS - GSM PLC Communications.zipsony 公司 某机台控制程序.rarStepNext.cpt.zipSTUP Example.zipTemplate for Step-Step Next Sequence.zipToggle Button.zipTracking product on conveyor.zipTXD-RXD Quickstart Programs.zipTXD-RXD Serial Port Handling.zipUseable timer.zipV600-E5CK.zipV700-V720 RFID Protocol Macro.zipVB与OMRON PLC通讯源码.rarWoodwood Controler Example Protocol Program.zipYH32-315油压机程序.rar一个CJ1M的程序.rar一个OMRON程序,带位置控制模块.rar一个生产线上润滑控制的小程序.rar一些简单的cpm1a程序.rar一控三恒压供水程序.rar三层提升机欧姆龙CQM1H程序.rar三菱400吨和200号冲床程序.rar上海产自动模切机飞达部程序.zip上海狮印全自动啤机程序.rar东芝压铸机梯形图.rar两步法吹瓶机.rar乡林剪台.rar买书的随书样例.rar井研磨边机.rar交通灯注释全.rar今机立式注塑机程序.rar伺服电机正反转控制.rar位置控制（旋转编码器与PLC）.rar充磁机程序.rar先启后停 后启先停 事例.rar冲床程序.rar分拣线主机一个CJ1M的分拣线程序下挂CP1H.rar利慧利乐灌装机程序.rar刮水器停止位置检查程序.rar力泰翻胚机程序.rar北人04印刷机程序.rar北人LQD10骑马装订程序.rar半自动吹瓶机的程.rar南京印刷机.zip卡板程式.rar压制机程序（带解释，注释）.rar压力机控制程序.rar原创液压机程序带注释欧姆龙PLC加信捷文本.rar原点搜索程序.rar双翻分拣机.rar双边机.rar反渗透整套PLC控制.rar台湾产染色机欧姆龙PLC带3只IO扩展控制程序.rar台湾大拉无板.rar啤酒厂酒瓶美容机.rar四川绵阳建丰热磨工段.rar在用设备程序.rar垂直涂布.rar外端子设计数值.rar大型热电厂 PLC程序(带注解).rar大摇动超声波清洗机.rar大连75密练注释程序.rar安呼12级.rar富佳扶梯程序.rar对齐度编程！！.rar小车控制程序.rar小车送料”例程.rar广东锻压气压冲床程序（80T）有详细注解.rar广告牌灯箱.rar微电机刷簧自动组装程序.rar微粉砖自动送料带OMRON CQM2A+扩展程序带注释.rar意大利进口皮革压花.rar扎钢机程序.rar打包机.rar拔盖机.rar拨码控制.rar挡砖磨边机（新1）.rar捷豹空压机控制程序.rar接木机.rar控制程序例子.rar推挂.rar攻丝机2（新）.rar料位显示.rar旋转门控制程序1.rar无协议.rar无心磨床(OMRON系统,带机械手有详细注解).rar无线胶装机欧姆龙程序.zip日本人编的程序 抛光研磨.rar日本成型磨床控制程序（附注释）欧姆龙CPM1A.rar板坯定厚.rar样例，有注释.rar模拟量试验.rar欧姆龙CJ1M铬化机程序带注释.rar欧姆龙CP1H例程.rar欧姆龙CPM1A的PLC.rar欧姆龙CPM2AH PLC和欧姆龙NTZ触摸屏编写的超声波清洗机程序..rar欧姆龙CPM2AH Host Link通讯程序(发布源码).rar
上传时间： 2021-10-22
上传用户：
Multisim官方示例Multisim仿真例程基础电路范例135例合集:Chapter 1 - RLC CircuitsChapter 2 - DiodesChapter 3 - TransistorsChapter 4 - AmplifiersChapter 5 - OpampsChapter 6 - FiltersChapter 7 - Miscellaneous CircuitsFundamental Circuits.pdf004 Parallel DC Circuits.ms10005 Series-Parrallel DC Circuit.ms10006 Current Analysis.ms10007 Millmans Theorem 1.ms10008 Millmans Theorem 2.ms10009 Kirchhoff's Current Law.ms10010 Thevenin's Theorem.ms10011 Superposition Principle.ms10012 Nortons Theorem and Source Conversion.ms10013 AC Voltage Measurement.ms10014 Frequency Response of the Series RL Network.ms10015 RL High and Low Pass Filter.ms10016 Frequency Response of the Series RC Network.ms10017 RC High and Low Pass Filter.ms10019 Center-Tapped Full-Wave Rectifier.ms10020 Bridge Rectifier.ms10021 Capacitor-Input Rectifier Filter.ms10022 Diode Clipper (Limiter).ms10023 Diode Clipper.ms10024 Diode Clamper (DC Restorer).ms10025 Diode Voltage Doubler.ms10026 Zener Diode and Voltage Regulation 1.ms10027 Zener Diode and Voltage Regulation 2.ms10028 Zener Diode and Voltage Regulation 3.ms10105 TTL Inverter.ms10107 TTL Gate.ms10109 OR Gate Circuit.ms10111 Over-Damp Circuit.ms10113 Critical-Damp Circuit.ms10115 Series RLC Circuit 1.ms10117 Clapp Oscillator.ms10119 Differential Amplifier 1.ms10121 Differential Amplifier in Common Mode.ms10123 LC Oscillator with Unity Gain Buffer.ms10125 Notch Filter.ms10127 PNP Differential Pair.ms10129 Crossover Network.ms10131 Second-Order High-Pass Chebyshev Filter.ms10133 Third-Order High-Pass Chebyshev Filter.ms10135 Fifth-Order High-Pass Filter.ms10
标签： multisim
上传时间： 2021-10-27
上传用户：trh505
Research on microwave power amplififiers has gained a growing importance demanded by the many continuously developing applications which require such subsystem performance. A broad set of commercial and strategic systems in fact have their overall performance boosted by the power amplififier, the latter becoming an enabling component wherever its effificiency and output power actually allows functionalities and operating modes previously not possible. This is the case for the many wireless systems and battery-operated systems that form the substrate of everyday life, but also of high-performance satellite and dual-use systems.
上传时间： 2021-10-30
上传用户：得之我幸78
74HC595 A4950 MAX3232 ULN2003AD STM32F207VCT6 AD集成封装库，原理图库器件型号列表：Library Component Count : 53Name Description----------------------------------------------------------------------------------------------------1N4148 High Conductance Fast Diode1N4448 High Conductance Fast Diode1N914 High Conductance Fast Diode1N914A High Conductance Fast Diode1N914B High Conductance Fast Diode1N916 High Conductance Fast Diode1N916A High Conductance Fast Diode1N916B High Conductance Fast Diode2N3904 NPN General Purpose Amplifier74ALS86 74HC595 8M贴片晶振 A4950 直流电机驱动AO4805CAP CapacitorCAP SMD CapacitorCON2 ConnectorCON2*10 ConnectorCON2*12P ConnectorCON2*7 ConnectorCON2*9 ConnectorCON3 ConnectorCON4 ConnectorCON5 ConnectorCON7 ConnectorCap Pol 极性电解电容DIODE DiodeFUSE1 FuseFUSE2 FuseINDUCTOR2 IRF7351PbF N-MOSJS1-12V-FLED MAX487 MAX809RD R0.125 Less than 1/4 Watt Power Resistor.RES2 RGRPI*4 Res1 ResistorSGM8955XN5G/TR 测量放大器SM712 SN74LV4052AD SP3232ESST25VF016B-50-4I-S2AFI2C Real-Time Clock.STM32F107VTC6 STM32F107VTC6SW DIP-4 编码开关SW-PB SwitchTPS54302 45UA静态电流 3ATVS SMBJ30CAULN2003 XC6214XTAL Crystal OscillatorPCB封装库列表：Component Count : 40Component Name-----------------------------------------------4G模块-外置7D181K0603-LED0603C0603R0805C12061210181232255569-2*1P直针5569-2*2P直针AT-26CAP-D8DO-214AANHSOP-8J-SPDT-5JTAGL
上传时间： 2021-11-15
上传用户：ttalli
AC220V转DC(12V15W )电源板AD设计硬件原理图+PCB文件，2层板设计，大小为100*55mm, ALTIUM设计的原理图+PCB文件，可以做为你的学习设计参考。主要器件型号如下：Library Component Count : 24Name Description----------------------------------------------------------------------------------------------------2N3904 NPN General Purpose Amplifier2N3906 PNP General Purpose AmplifierBRIDGE1 Diode BridgeCON2 ConnectorCap CapacitorCap Pol1 Polarized Capacitor (Radial)D Zener Zener DiodeDIODE Diode 1N914 High Conductance Fast DiodeECELECTRO2 Electrolytic CapacitorFP103 FUSE-HHeader 2 Header, 2-PinINDUCTOR2 NMOS-2 N-Channel Power MOSFETPC837 OptoisolatorRES2-B Res Varistor Varistor (Voltage-Sensitive Resistor)T TR-2B TRANS1UCC28051 Volt Reg Voltage Regulator
上传时间： 2021-11-21
上传用户：kent
It all started rather innocuously. I walked into Dr GT Murthy’s office one fine day, andchanged my life. “Doc” was then the General Manager, Central R&D, of a very largeelectrical company headquartered in Bombay. In his new state-of-the-art electronics center,he had hand-picked some of India’s best engineers (over a hundred already) ever assembledunder one roof. Luckily, he too was originally a Physicist, and that certainly helped me gainsome empathy. Nowadays he is in retirement, but I will always remember him as athoroughly fair, honest and facts-oriented person, who led by example. There were severalthings I absorbed from him that are very much part of my basic engineering persona today.You can certainly look upon this book as an extension of what Doc started many years agoin India … because that’s what it really is! I certainly wouldn’t be here today if I hadn’t metDoc. And in fact, several of the brash, high-flying managers I’ve met in recent years,desperately need some sort of crash course in technology and human values from Doc!
标签： 开关电源
上传时间： 2021-11-23
上传用户：
General Design Specification:1. AC Input Range 180-264Vac, Isolated ac-dc offline, 12LEDS,Output 700mA2. Intelligent wall dimmer detections(Leading-edge dimmer , Trailing-edgedimmer , No-dimmer)3. Multiple dimming control scheme4. Wide dimming range from 1% up to 100%5. No visible flicker6. Resonant control to achieve high efficiency7. High Power Factor, 0.9 without dimmer8. Temperature degrade control to adjust the LED9. Primary-only Sensing eliminates opto-isolator feedback and simplifies design
标签： iw3617
上传时间： 2021-12-03
上传用户：canderile
