选择文件 X 双色球彩票过滤器 绿色免费版
上传时间： 2020-11-27
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选择文件 X 双色球彩票管理系统(LotterySystem)
标签： LotterySystem 双色 管理系统
上传时间： 2020-11-27
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This edition of Digital Image Processing is a major revision of the book. As in the 1977 and 1987 editions by Gonzalez and Wintz, and the 1992, 2002, and 2008 editions by Gonzalez and Woods, this sixth-generation edition was prepared with students and instructors in mind. The principal objectives of the book continue to be to provide an introduction to basic concepts and methodologies applicable to digital image processing, and to develop a foundation that can be used as the basis for further study and research in this field. To achieve these objectives, we focused again on material that we believe is fundamental and whose scope of application is not limited to the solution of specialized problems. The mathematical complexity of the book remains at a level well within the grasp of college seniors and first-year graduate students who have introductory preparation in mathematical analysis, vectors, matrices, probability, statistics, Linear systems, and computer programming. The book website provides tutorials to support readers needing a review of this background material
标签： Processing Digital Image
上传时间： 2021-02-20
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This texts contemporary approach focuses on the concepts of Linear control systems, rather than computational mechanics. Straightforward coverage includes an integrated treatment of both classical and modern control system methods. The text emphasizes design with discussions of problem formulation, design criteria, physical constraints, several design methods, and implementation of compensators.Discussions of topics not found in other texts--such as pole placement, model matching and robust tracking--add to the texts cutting-edge presentation. Students will appreciate the applications and discussions of practical aspects, including the leading problem in developing block diagrams, noise, disturbances, and plant perturbations. State feedback and state estimators are designed using state variable equations and transfer functions, offering a comparison of the two approaches. The incorporation of MATLAB throughout the text helps students to avoid time-consuming computation and concentrate on control system design and analysis
标签： 控制系统
上传时间： 2021-12-15
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CHAPTER 1: THE OP AMP CHAPTER 2: OTHER Linear CIRCUITS CHAPTER 3: SENSORS CHAPTER 4: RF/IF CIRCUITS CHAPTER 5: FUNDAMENTALS OF SAMPLED DATA SYSTEMS CHAPTER 6: CONVERTERS CHAPTER 7: DATA CONVERTER SUPPORT CIRCUITS CHAPTER 8: ANALOG FILTERS CHAPTER 9: POWER MANAGEMENT CHAPTER 10: PASSIVE COMPONENTS CHAPTER 11: OVERVOLTAGE EFFECTS ON ANALOG INTEGRATED CIRCUITS CHAPTER 12: PRINTED CIRCUIT BOARD (PCB) DESIGN ISSUES CHAPTER 13: DESIGN DEVELOPMENT TOOLS
上传时间： 2021-12-21
上传用户：wangshoupeng199
The PW4556 series of devices are highly integrated Li-Ion and Li-Pol Linear chargers targetedat small capacity battery for portable applications. It is a complete constant-current/ constantvoltage Linear charger. No external sense resistor is needed, and no blocking diode is required dueto the internal MOSFET architecture. It can deliver up to 300mA of charge current (using a goodthermal PCB layout) with a final float voltage accuracy of ±1%. The charge voltage is fixed at 4.2V or4.35V, and the charge current can be programmed externally with a single resistor. The chargerfunction has high accuracy current and voltage regulation loops and charge termination
标签： pw4556
上传时间： 2022-02-11
上传用户：1208020161
The PW4055 is a complete constant-current /constant-voltage Linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the input supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2µA. The PW4055 can be put into shutdown mode, reducing the supply current to 25µA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an input voltage
标签： pw4055
上传时间： 2022-02-11
上传用户：jason_vip1
The PW2601 is a charger front-end integrated circuit designed to provide protection to Li-ionbatteries from failures of charging circuitry. The device monitors the input voltage, battery voltageand the charging current to make sure all three parameters are operated in normal range. Thedevice will switch off internal MOSFET to disconnect IN to OUT to protect load when any of inputvoltage, output current exceeds the threshold. The Over temperature protection (OTP) functionmonitors chip temperature to protect the device. The PW2601 also can protect the system’sbattery from being over charged by monitors the battery voltage continuously. The deviceoperates like a Linear regulator, maintaining a 5.1V output with input voltages up to the input overvoltage threshold.The PW2601 is available in DFN-2x2-8L package. Standard products are Pb-free and Halogenfree
标签： pw2601
上传时间： 2022-02-11
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LT3095MPUDD双通道低噪声偏置发生器的典型应用电路凌力尔特公司 (Linear Technology Corporation) 推出双通道 IC LT3095，该器件从单一输入提供两路非常低噪声、低纹波的偏置电源。每个通道都纳入了单片升压型 DC/DC 转换器，一个集成的超低噪声和高 PSRR (电源抑制比) 线性稳压器对该转换器进行了后置稳压。LT3095 在输出电压高达 20V 时提供高达 50mA 的连续输出电流，总纹波和噪声 <100µVP-P。该器件在 3V 至 20V 输入电压范围内工作，从而可与多种电源兼容。 LT3095 的固定频率、峰值电流模式升压型 DC/DC 转换器包括一个集成的 950mA 电源开关、肖特基二极管和内部频率补偿。开关频率在 450kHz 至 2MHz 内可通过单个电阻器编程，或可同步至一个外部时钟，因此允许使用纤巧的外部组件。结合紧凑的 3mm x 5mm QFN 封装，LT3095 可提供简单、占板面积紧凑、高效率的解决方案，适用于仪表放大器、RF 和数据转换系统、以及其他低噪声偏置应用。 LT3095 的线性稳压器运用凌力尔特专有的电流源基准架构，从而提供了很多优势，例如能够用单个电阻器设定输出电压，带宽、噪声、PSRR 和负载调节性能基本上不受输出电压影响。集成输出噪声 (在 10Hz 至 100kHz 带宽) 仅为 4µVRMS，而且在整个开关频率范围内 PSRR 超过70dB，从而使总的噪声和纹波 <100µVP-P。线性稳压器调节升压型转换器的输出电压，使其比线性稳压器输出电压高 2V，从而优化了功耗、瞬态响应和 PSRR 性能。为了提高系统可靠性，LT3095 提供短路和热保护，还为每个通道提供独立和精确的使能 / UVLO 门限。微功率工作时，两个 EN 引脚均被拉低。
标签： 噪声偏置发生器
上传时间： 2022-02-15
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LED 线阵显示装置, 分为 LED 线性旋转显示主机和图文录入器两部分。主机用直流电机带动由红绿 LED 组成的线阵旋转, 同时线阵按照时序依次切换显示状态, 在固定区域利用视觉暂留效果形成 16×16 点阵, 用以显示图文;图文录入器用 HMI 触控屏作为人机交互界面, 实现图文录入和回放功能。主机与图文录入器通过无线通信方式进行信息交互,可由图文录入器控制主机切换不同工作任务, 以及改变线阵显示内容。The LED Linear array display device is divided into two parts:the one is the main unit used to display content,and the other one is used to input the contents.The main unit is driven by a DC motor to rotate the Linear array composed by red and green light emitting diodes.At the same time,the 16×16 dot matrix that switching the display state according to the time sequence on the main unit displays pictures and texts in the fixed area,by using the visual temporary effect.The HMI touch screen is used as human machine interface to realize the function that input and playback pictures and texts.The two parts of the device communicate with each other through wireless communication.The image and text input controller can control the main unit to switch different tasks and change the content of Linear array displayed.
标签： stc12c5a60s2 单片机 led
上传时间： 2022-03-28
上传用户：jiabin
