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Abstract-In

  • 提高在噪声环境下的磁卡读写器(MCR)系统

    Abstract: Most magnetic read head data sheets do not fully specify the frequency-dependent components andare often vague when specifying other key parameters. In some cases, the specifications of two very similarheads from two different manufacturers might be quite different in terms of parameters specified and omitted.The limitations in the data sheets make designing an optimum card reading system unnecessarily difficult andtime consuming. This document outlines a strategy to overcome the above shortcomings and offers guidelinesto overcome the noise issues.

    标签: MCR 噪声环境 磁卡读写器

    上传时间: 2013-11-13

    上传用户:dysyase

  • 什么时候校准是重要的

    Abstract: Perfection is relative and application specific. The perfect race car is not the car we use to commute to work. We need products for everyday use that are high quality, affordable, and solidly reliable. There will be times when we must use components that are not perfect, and this is when calibration becomes important. Calibration techniques reduce tolerances in imperfect manufacturing equipment while maintaining affordability.

    标签: 校准

    上传时间: 2013-10-09

    上传用户:哈哈hah

  • 双绞线和低通滤波器降低EMI_RFI

    Abstract: Alexander Graham Bell patented twisted pair wires in 1881. We still use them today because they work so well. In addition we have the advantage ofincredible computer power within our world. Circuit simulators and filter design programs are available for little or no cost. We combine the twisted pair and lowpassfilters to produce spectacular rejection of radio frequency interference (RFI) and electromagnetic interference (EMI). We also illustrate use of a precision resistorarray to produce a customizable differential amplifier. The precision resistors set the gain and common mode rejection ratios, while we choose the frequencyresponse.

    标签: EMI_RFI 双绞线 低通滤波器

    上传时间: 2014-11-26

    上传用户:Vici

  • 如何选择合适的Logger按钮

    Abstract: For many first-time users, finding the right logger that meets their needs can be a challenging task. In simple

    标签: Logger 如何选择 按钮

    上传时间: 2014-01-19

    上传用户:缥缈

  • MAX9930在有线电视中的功能应用

    Abstract: The MAX9930–MAX9933 family of RF controllers and detector can be used in a wide variety of applications. Anideal application is cable television (CATV) over fiber, where either a RF controller or a RF detector controls the gain of atransimpedance amplifier (TIA). This application note shows how the MAX9930 (RF controller) can be used as either theRF controller or detector.

    标签: 9930 MAX 有线电视

    上传时间: 2013-10-11

    上传用户:Pzj

  • Programming Baud Rates of the MAX3108 UART

    Abstract: The MAX3108 is a complete high-performance universal asynchronous receiver-transmitter (UART) in a tiny 2.1mm ×

    标签: Programming Rates Baud 3108

    上传时间: 2014-12-23

    上传用户:清风冷雨

  • 信号链和PLC是如何影响我们的生活

    Abstract: It is incredible how many programmable logic controls (PLCs) around us make our modern life possible and pleasant.Machines in our homes heat and cool our air and water, as well as preserve and cook our food. This tutorial explains the importanceof PLCs, and describes how to choose component parts using the parametric tools on the Maxim's website.A similar version of this article was published February 29, 2012 in John Day's Automotive Electronic News.

    标签: PLC 信号链

    上传时间: 2013-11-10

    上传用户:liaocs77

  • 校准ADC内部偏移的光学微控制器DS4830

    Abstract: The DS4830 optical microcontroller's analog-to-digital converter (ADC) offset can change with temperature and gainselection. However, the DS4830 allows users to measure the ADC internal offset. The measured ADC offset is added to the ADCoffset register to nullify the offset error. This application note demonstrates the DS4830's ADC internal offset calibration in theapplication program.  

    标签: 4830 ADC DS 校准

    上传时间: 2014-12-23

    上传用户:萍水相逢

  • 校准复用器简化系统校准设计

    Abstract: IC switches and multiplexers are proliferating, thanks to near-continual progress in lowering the supply voltage,incorporating fault-protected inputs, clamping the output voltage, and reducing the switch resistances. The latest of these advancesis the inclusion of precision resistors to allow two-point calibration of gain and offset in precision data-acquisition systems.

    标签: 校准复用器 校准

    上传时间: 2013-11-12

    上传用户:acwme

  • 精密DAC和看门狗提高模拟输出安全

    Abstract: Using a DAC and a microprocessor supervisor, the system safety can be improved in industrial controllers, programmablelogiccontrollers (PLC), and data-acquisition systems. The analog output is set to zero-scale (or pin-programmable midscale) when amicroprocessor failure, optocoupler failure, or undervoltage condition occurs. A simple application is shown on how to implement thisfunction.

    标签: DAC 精密 看门狗 模拟

    上传时间: 2013-10-17

    上传用户:sjb555