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Principle usb, organize online, and very useful!
usb的原理,网上整理的，好不容易找到的，应该对很多人都很有用处！-Principle usb, organize online, and very useful!
- 2022-02-12 02:14:20下载
- 积分：1
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单端反激式开关电源具有结构简单、输入输出电气隔离、电压升／降范围宽、易于多路输出、可靠性高、造价低等优点，广泛应用于小功率场合。然而，由于漏感影响，反激变换器功
单端反激式开关电源具有结构简单、输入输出电气隔离、电压升／降范围宽、易于多路输出、可靠性高、造价低等优点，广泛应用于小功率场合。然而，由于漏感影响，反激变换器功率开关管关断时将引起电压尖峰，必须用钳位电路加以抑制。由于RCD钳位电路比有源钳位电路更简洁且易实现，因而在小功率变换场合RCD钳位更有实用价值。 -Single-ended flyback switching power supply with a simple structure, input and output electrical isolation, voltage up/down range, easy to multi-output, high reliability and low cost, widely used in low-power occasions. However, due to leakage effects flyback converter power switch off when the voltage spike caused by the need to be inhibited by clamping circuit. RCD clamp circuit as a result of active-clamp circuit than the more concise and easy to realize, and in low-power transform RCD clamp occasions more practical value.
- 2022-01-21 05:30:24下载
- 积分：1
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famous for programming AVR hypertension HVprog diagram, y he will not have to fu...
著名的AVR 高压编程器HVprog原理图,y有了他就不再为熔丝错误,负位脚变IO,ISP被锁等等一些问题而烦恼了-famous for programming AVR hypertension HVprog diagram, y he will not have to fuse errors, Negative changes IO feet, the ISP was locked, and so on some issues and trouble
- 2022-03-20 18:20:01下载
- 积分：1
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数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,...
数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,-15V），程控电路。并且巧妙得反置使用D/A变换器。使程控输出电压0-9.9手动可调，步距为0.2V。并可预置电压值，采用LED同步显示。-NC DC power source circuit of the design of two modules: the source DC circuit (+15 V,+5 V,-15V), program-controlled circuit. And clever use of a reversal of D/A converter. So that the output voltage programmed manually adjustable 0-9.9, step to 0.2V. And preset voltage value, shows that the use of LED synchronization.
- 2022-01-26 02:34:33下载
- 积分：1
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ZTE' s wireless LAN solutions, Zibo City Commercial Bank spread spectrum wire...
中兴通讯无线局域网解决方案,淄博市商业银行无线扩频联网系统项目建设方案,金亚苑小区无线数据接入方案,河北省政府无线网络-ZTE" s wireless LAN solutions, Zibo City Commercial Bank spread spectrum wireless networking system project-building program, Jin Ya Yuan cell wireless data access solutions, wireless network in Hebei Province Government
- 2023-06-24 07:30:05下载
- 积分：1
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本作品采用Atmel公司的AT89C51单片机，以汇编语言为程序设计的基础，设计一个用四位数码管显示时、分的时钟。在实物图中，左边靠近电源的绿色发光二极管（长亮...
本作品采用Atmel公司的AT89C51单片机，以汇编语言为程序设计的基础，设计一个用四位数码管显示时、分的时钟。在实物图中，左边靠近电源的绿色发光二极管（长亮）是电源指示灯，表示的是5V稳定电源工作正常；单片机左下角红色发光二极管是秒灯，每闪烁一次表示时间走动一秒钟；按键正上方绿色发光二极管是设置灯，当时间正常走动时此时不亮，当第一次按下设置键（右键）时，此绿灯亮，同时秒时熄灭，且分钟的两位数码管出现闪烁，时间停止走动，进入校时状态，表示此时可以进行分钟的调整，当按一次加一键（左键）可实现分钟的加一功能，分钟以60分为极限，超出60分则返回数值0，从0再重新算起；如果再次按下设置键时，这时秒灯和设置灯仍旧保持熄灭和点亮状态，表示分钟的数码管停止闪烁，反过来表示小时的两位数码管则开始闪烁，此时可进行小时的调整，按加1键可实现小时的加1功能，小时调整以24为上限，同样超出24小时则从新回0；当第三次按下设置键时，数码管停止闪烁，设置灯熄灭，秒灯重新闪烁，时间以设定值计时。-err
- 2023-09-08 11:40:04下载
- 积分：1
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Programmable Universal Switched
可编程通用开关电容有源滤波器MAX261及其应用-Programmable Universal Switched-Capacitor Active Filter MAX261 and Its Application
- 2022-02-16 01:40:56下载
- 积分：1
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for microchip choice
for microchip choice
- 2022-01-21 22:48:55下载
- 积分：1
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大屏幕显示及触摸屏系统设计方案， 本系统软件首先界面精美，操作简便，触控点布局合理，方便触摸，提高触摸准确率。其次系统结构设计合理，充分利用图、文、声、像以及交...
大屏幕显示及触摸屏系统设计方案， 本系统软件首先界面精美，操作简便，触控点布局合理，方便触摸，提高触摸准确率。其次系统结构设计合理，充分利用图、文、声、像以及交互性等多媒体特征对用户的操作、信息查询与接收等进行合理导引，以便用户以最少的时间和精力查询到最多的信息-Large-screen display and touch-screen system design, software, first of all, the system interface is beautifully simple, touch points, rational layout, easy to touch and improve touch accuracy. Secondly, the structural design of a reasonable system, make full use of maps, text, sound, such as interactive multimedia, as well as characteristics of the user" s operation, and receiving information such as a reasonable guide, so users with minimal time and effort to maximize the amount of information inquiries
- 2022-08-15 13:29:51下载
- 积分：1
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New computer flat knitting machine needle selector of the working principle and...
新型电脑针织横机选针器的工作原理及选型设计-New computer flat knitting machine needle selector of the working principle and selection of the design
- 2023-02-19 14:30:04下载
- 积分：1
