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Methods 308条

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数控DCDC转换器在便携产品中的应用

Abstract: This tutorial discusses methods for digitally adjusting the output voltage of a DC-DC converter. The digital adjustmentmethods are with a digital-to-analog converter (DAC), a trim pot (digital potentiometer), and PWM output of a microprocessor.Each method is assessed and several DACs and ...

/dl/21187.html

标签： DCDC 数控便携产品中的应用

上传时间： 2013-11-20

上传用户：zycidjl

意法半导体运放稳定性

  Who has never experienced oscillations issues when using an operational amplifier? Opampsare often used in a simple voltage follower configuration. However, this is not the bestconfiguration in terms of capacitive loading and potential risk of oscillations.Capacitive loads have a big impa ...

/dl/21302.html

标签： 半导体运放稳定性

上传时间： 2013-10-28

上传用户：chenbhdt

行为模式和同步事件调度操作

The Reactor design pattern handles service requests that are delivered concurrently to an application by one or more clients. Each service in an application may consist of serveral methods and is represented by a separate event handler that is responsible for dispatching service-specific requests. ...

/dl/21343.html

标签： 模式操作调度

上传时间： 2013-10-15

上传用户：libinxny

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Power conversion by virtue of its basic role produces harmonics due to theslicing of either voltages or currents. To a large extent the pollution in theutility supply and the deterioration of the power quality has been generatedor created by non-linear converters. It is therefore ironic that power c ...

/dl/21413.html

标签： Filters Active

上传时间： 2013-11-05

上传用户：AISINI005

计算FR4上的差分阻抗(PDF)

Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to ...

/dl/22297.html

标签： FR4 计算差分阻抗

上传时间： 2014-12-24

上传用户：DE2542

智能电网安全性

Abstract: The rapid build out of today's smart grid raises a number of security questions. In this article,we review two recent well-documented security breaches and a report of a security gap. These situationsinclude a 2009 smart-meter hack in Puerto Rico; a 2012 password discovery in grid di ...

/dl/23005.html

标签： 智能电网安全性

上传时间： 2013-10-27

上传用户：tecman

高电压,低噪音,DCDC转换器

  Photomultipliers (PMT), avalanche photodiodes (APD),ultrasonic transducers, capacitance microphones, radiationdetectors and similar devices require high voltage,low current bias. Additionally, the high voltage must bepristinely free of noise; well under a millivolt is a commonrequirement ...

/dl/24384.html

标签： DCDC 高电压低噪音转换器

上传时间： 2013-10-28

上传用户：lhw888

西门子S7-300 PLC模拟量转换

Analog Inputs and Outputs in an S7 PLC are represented in the PLC as a 16-bit integer. Over the nominal span of the analog input or output, the value of this integer will range between - 27648 and +27648. However, it is easier to use the analog values if they are scaled to the same units and ra ...

/dl/29048.html

标签： 300 PLC 西门子模拟量

上传时间： 2013-11-17

上传用户：3294322651

基于ARM单片机的自动测高测距小车

生活中许多目标的高度和水平距离需要进行测量。目前主要的测量方法，仍以传统的皮尺丈量为主，测量效率不高，有时还很不方便，没有技术成熟的数字式测高测距产品。以基本的数学方法为理论依据，利用遥控小车做为载体，采用角度传感器测量角度、霍尔传感器测量水平距离等，通过单片机LM3S615进行数据计算，实现了对待测目标 ...

/dl/29167.html

标签： ARM 单片机自动

上传时间： 2013-10-30

上传用户：jackandlee

单片机P0口的片外数据存储器扩展

单片机作为一种微型计算机，其内部具有一定的存储单元（8031除外），但由于其内部存储单元及端口有限，很多情况下难以满足实际需求。为此介绍一种新的扩展方法，将数据线与地址线合并使用，通过软件控制的方法实现数据线与地址线功能的分时转换，数据线不仅用于传送数据信号，还可作为地址线、控制线，用于传送地址信号和控 ...

/dl/29174.html

标签： 单片机 P0口数据存储器扩展

上传时间： 2014-12-26

上传用户：adada

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Methods 308条

按分类查找:

数控DCDC转换器在便携产品中的应用

意法半导体运放稳定性

行为模式和同步事件调度操作

Active Filters

计算FR4上的差分阻抗(PDF)

智能电网安全性

高电压,低噪音,DCDC转换器

西门子S7-300 PLC模拟量转换

基于ARM单片机的自动测高测距小车

单片机P0口的片外数据存储器扩展

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