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教程资料 Protel使用中的一些问题和解答

Q01、如何使一条走线至两个不同位置零件的距离相同?  您可先在Design/Rule/High Speed/Matched Net Lengths的规则中来新增规则设定,最 后再用Tools/EqualizeNet Lengths 来等长化即可。   Q02、在SCHLIB中造一零件其PIN的属性,如何决定是Passive, Input, I/O, Hi- Z, ...
https://www.eeworm.com/dl/Protel/doc/20092.html
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模拟电子 微电脑型数学演算式隔离传送器

特点: 精确度0.1%满刻度 可作各式數學演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT类比输出功能 输入与输出绝缘耐压2仟伏特/1分钟(input/output/power) 宽范围交直流兩用電源設計 尺寸小,穩定性高
https://www.eeworm.com/dl/571/20761.html
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电源技术 微电脑型数学演算式双输出隔离传送器

特点(FEATURES) 精确度0.1%满刻度 (Accuracy 0.1%F.S.) 可作各式数学演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A| (Math functioA+B/A-B/AxB/A/B/A&B(Hi&Lo)/|A|/etc.....) 16 BIT 类比输出功能(16 bit DAC isolating analog output function) 输入/输出1/输出2绝缘耐压2仟伏特/1分钟(Dielectric strength 2KVac/1min. ...
https://www.eeworm.com/dl/505/23805.html
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电源技术 利用纤巧型负载点电路来简化电源电压的跟踪和排序

  Multiple-voltage electronics systems often requirecomplex supply voltage tracking or sequencing, whichif not met, can result in system faults or even permanentfailures in the fi eld. The design diffi culties in meetingthese requirements are often compounded in distributedpowerarchitecture ...
https://www.eeworm.com/dl/505/24296.html
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电源技术 多相DC/DC控制器精度和带宽限制

  Speed and accuracy don’t always go hand-in-handin DC/DC converter systems—that is, until now. TheLTC3811 is a dual output, fi xed frequency current modeDC/DC switching regulator controller designed for one oftoday’s most demanding power supply applications: highcurrent, ...
https://www.eeworm.com/dl/505/24321.html
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电源技术 GPON系统的APD偏置解决方案

  Avalanche photo diode (APD) receiver modules arewidely used in fi ber optic communication systems. AnAPD module contains the APD and a signal conditioningamplifi er, but is not completely self contained. It stillrequires signifi cant support circuitry including a highvoltage, low noise po ...
https://www.eeworm.com/dl/505/24332.html
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电源技术 运用LT3092电流源以高线性度来实现温度至电流转换

  One of the fi rst lessons in a basic electronics coursecovers the symbols for resistors, capacitors, inductors,voltage sources and current sources. Althougheach symbol represents a functional component of areal-world circuit, only some of the symbols have directphysical counterparts. For ...
https://www.eeworm.com/dl/505/24350.html
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电源技术 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 ...
https://www.eeworm.com/dl/505/24384.html
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单片机编程 Broadcom推出全球第一个802.11n单芯片解决方案

北京,2007年9月27日——全球有线和无线通信半导体市场的领导者Broadcom(博通)公司(Nasdaq:BRCM)今天宣布,推出全球第一个全功能802.11n单芯片解决方案BCM4322。BCM4322是Broadcom Intensi-fiTM产品系列的最新成员,它不仅是市场上最小和最经济的802.11n解决方案,而且第一个让Wi-Fi产品的实际无线吞吐量 ...
https://www.eeworm.com/dl/502/29099.html
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单片机编程 高压双管反激变换器的设计

高压双管反激变换器的设计:介绍一种双管反激的电路拓扑,分析了其工作原理,给出了一些关键技术参数的计算公式,设计并研制成功的30W 380V AC5 0H z/510V DC/+15.1 V DC(1A )、+5.2VDC(2A)辅助开关电源具有功率密度高、变换效率高、可靠性高等优良的综合性能。该变换器在高电压输人情况下有重要的应用价值。【关 键 词 】变 ...
https://www.eeworm.com/dl/502/31162.html
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