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  • OCP3601 Step-Up DCDC Controller

    The OCP3601 is a boost topology switching regulator control IC for battery-used applications fiel

    标签: Controller Step-Up 3601 DCDC

    上传时间: 2013-06-11

    上传用户:2780285129

  • LM621无刷电机换向器

    General Description The LM621 is a bipolar IC designed for commutation of brushless DC motors. The part is compatible with both three- and four-phase motors. It can directly drive the power switching devices used to drive the motor. The LM621 provides an adjustable dead-time circuit to eliminate ``shootthrough'' current spiking in the power switching circuitry. Operation is from a 5V supply, but output swings of up to 40V are accommodated. The part is packaged in an 18-pin, dual-in-line package.

    标签: 621 LM 无刷电机

    上传时间: 2013-07-24

    上传用户:sdq_123

  • 74LS48.pdf

    英文描述: BCD-to-Seven-Segment Decoder Driver(Internal Pull-up outputs) 中文描述: BCD码到七段解码器驱动程序(内部上拉输出)

    标签: 74 48 LS

    上传时间: 2013-07-13

    上传用户:cc1015285075

  • 74LS190.pdf

    英文描述: Synchronous Up/Down Decade Counters(single clock line) 中文描述: 同步向上/向下十年计数器(单时钟线)

    标签: 190 74 LS

    上传时间: 2013-06-18

    上传用户:haohaoxuexi

  • LPC1788用户手册LPC178X_7X_Rev3

    LPC178* 177*用户手册 LPC178x/7x 32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash and 96 kB SRAM; USB Device/Host/OTG; Ethernet; LCD; EMC Rev. 3 — 27 December 2011 Objective data sheet

    标签: LPC X_Rev 1788 178

    上传时间: 2013-04-24

    上传用户:胡佳明胡佳明

  • 电台维修模拟训练系统设计方法研究

    Methods for designing a maintenance simulation training system for certain kind of radio are introduced. Fault modeling method is used to establish the fault database. The system sets up some typical failures, follow the prompts trainers can locate the fault source and confirm the type to accomplish corresponding fault maintenance training. A training evaluation means is given to examining and evaluating the training performance. The system intuitively and vividly shows the fault maintenance process, it can not only be used in teaching, but also in daily maintenance training to efficiently improve the maintenance operation level. Graphical programming language LabVIEW is used to develop the system platform.

    标签: 电台维修 模拟训练 方法研究 系统设计

    上传时间: 2013-11-19

    上传用户:3294322651

  • 凌力尔特工业信号链路

    Industrial systems demand semiconductors that are precise, flexibleand reliable. Linear Technology offers a broad line of high performanceanalog ICs that simplify system design with rugged devices featuringparameters fully guaranteed over the -40°C to 85°C temperature range.We back this up with knowledgeable applications support, long productlife cycles and superior on-time delivery.

    标签: 凌力尔特 工业信号 链路

    上传时间: 2013-11-02

    上传用户:xiaodu1124

  • MAX17600数据资料

     The MAX17600–MAX17605 devices are high-speedMOSFET drivers capable of sinking /sourcing 4A peakcurrents. The devices have various inverting and noninvertingpart options that provide greater flexibility incontrolling the MOSFET. The devices have internal logiccircuitry that prevents shoot-through during output-statchanges. The logic inputs are protected against voltagespikes up to +14V, regardless of VDD voltage. Propagationdelay time is minimized and matched between the dualchannels. The devices have very fast switching time,combined with short propagation delays (12ns typ),making them ideal for high-frequency circuits. Thedevices operate from a +4V to +14V single powersupply and typically consume 1mA of supply current.The MAX17600/MAX17601 have standard TTLinput logic levels, while the MAX17603 /MAX17604/MAX17605 have CMOS-like high-noise margin (HNM)input logic levels. The MAX17600/MAX17603 are dualinverting input drivers, the MAX17601/MAX17604 aredual noninverting input drivers, and the MAX17602 /MAX17605 devices have one noninverting and oneinverting input. These devices are provided with enablepins (ENA, ENB) for better control of driver operation.

    标签: 17600 MAX 数据资料

    上传时间: 2013-12-20

    上传用户:zhangxin

  • 高精度I2C实时时钟的设计

    Abstract: This application note presents an overview of the operational characteristics of accurate I²C real-time clocks (RTCs),including the DS3231, DS3231M, and DS3232. It focuses on general application guidelines that facilitate use of device resources forpower management, I²C communication circuit configurations, and I²C characteristics relative to device power-up sequences andinitializations. Additional discussions on decoupling are provided to support developing strategies for mitigating power-supply pushingof device frequency.

    标签: I2C 高精度 实时时钟

    上传时间: 2013-11-23

    上传用户:WMC_geophy

  • 利用数字电位器调整并校准升压型DC-DC转换器

    The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC converter (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an input supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and span a range wide enough to account for resistance, potentiometer and DCDCconverter tolerances (27.6V to 36.7V).

    标签: DC-DC 数字电位器 升压型 校准

    上传时间: 2014-12-23

    上传用户:781354052