DESCRIPTION The DG449 is a dual supply single-pole/double-throw (SPDT) switches. On resistance is 38 and flatness is 2.6 max over the specified analog signal range. These analog switches were designed to provide high speed, low error switching of
With an n- and p-channel MOSFET, you can easily implement a single-pole double-throw (SPDT) switch to isolate part of a circuit and power it from a secondary supply for standby operation while the rest of the circuit is off (Figure 1). By using a com
Reference http://blog.xuite.net/auster.lai/twblog/433393966 開關(switch)用來控制電路的開與閉,機械式的switc內部是由接點開關.彈簧.與切換搖柄所組成. 電路圖上switc可用簡單的符號來表示,單軸單切(single pole single throw, SPST).單軸雙切(single pole double throw, SPDT).雙軸單切(double pole single throw, DPST).雙軸雙切(do
树莓派是当前最火的嵌入计算平台没有之一,树莓派可以给我们无数的想象,树莓派的高性能.低功耗.低成本.可扩展性(最新的树莓派原生支持WIFI和蓝牙,这功能太赞了)深受大家的喜爱.虽然树莓派到目前为止已经很好安装系统了.但是要想方便的使用和部署开发的软件还是比较麻烦的. 安装环境的话,你的有树莓派硬件(此图为:树莓派3 Model B),你还得需要一个支持HDMI显示器(电视机也可以).HDMI线.MicroSD卡(8G+,Class10+级别).电源适配器(5V.2A+.MicroUSB接口)
AAU (Active Antenna Unit) In the MBB (Mobile Broadband) era, the astonishing growth in data traffic carried by mobile broadband systems brought on by the integration of video, social networking and the overwhelming acceptance of mobile terminals puts
中秋节假期这么快就没了,这几天还一直下雨,索性在家看看书.这次看的是Tom Lane的<A Tour of PostgreSQL Internals>.这篇小随笔就算做学习笔记了.园子里面大神多,如果有哪里讲得不对,还请各位前辈多多指教了~在这个ppt里面,大神Tom Lane分别从三个角度对Postgresql的内部原理进行了介绍. 在传统的计算机算法和数据结构领域,大多数专业教材和书籍的默认语言都是Java或者C/C+ +,O’REILLY家倒是出了一本叫做<数据结构与算法javas