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Level-shifting nixes need for dual power supply
The AD736 true-rms-to-dcconverter is useful for many applications that require precise calculation of the rms value of a waveform. This converter can ...
分类:其他好文   时间:2014-11-28 16:14:22    阅读次数:142
Simple dc/dc converter increases available power in dual-voltage system
The schematic inFigure 1shows a way to increase the power available from a current-limited 5V supply by adding power from a –5V supply. The dc/dc conv...
分类:其他好文   时间:2014-11-28 14:24:24    阅读次数:205
Get buck-boost performance from a boost regulator
The SEPIC (single-ended, primary-inductance-converter) topology is generally a good choice for voltage regulators that must produce an on output volta...
分类:其他好文   时间:2014-11-28 14:22:06    阅读次数:279
Single transistor provides short-circuit protection
In certain dc/dc-converter applications, on-chip, cycle-by-cycle current limit may be insufficient protection to prevent a failure during a short circ...
分类:其他好文   时间:2014-11-28 14:19:55    阅读次数:221
Lower dc/dc-converter ripple by using optimum capacitor hookup
Low-ripple-voltage positive-to-negative dc/dc converters find use in many of today's high- frequency and noise-sensitive disk drives, battery-powered ...
分类:其他好文   时间:2014-11-28 14:08:43    阅读次数:251
Transformerless dc/dc converter produces bipolar outputs
The conventional way to produce dual (positive and negative) outputs from a single positive input is to use a transformer. Although such designs are r...
分类:其他好文   时间:2014-11-28 14:08:17    阅读次数:145
MOSFET shunt regulator substitutes for series regulator
You would normally use a series linear regulator or a dc/dc converter to obtain 3V dc from a higher supply. However, when breadboarding a concept, you...
分类:其他好文   时间:2014-11-28 14:05:17    阅读次数:142
External components provide true shutdown for boost converter
The step-up switching-converter circuit inFigure 1presents a familiar problem: If you shut down boost converter IC1by pulling itsinput low, external i...
分类:其他好文   时间:2014-11-28 14:03:16    阅读次数:131
使用xsocket框架实现的Android即时通讯软件
通过Xsocket实现的Android微信,并不是特别完善,可以在上面进行修改,界面仿照微信进行开发的,Xstream实现XML的传输,可以改成JSON,包括系统的登录,添加好友,聊天,朋友圈啊等功能。使用Activity、intent、SharedPreferences、ContentProvider,BroadcastReceiver、Application、dialog等. 系统从总体...
分类:移动开发   时间:2014-11-27 20:28:41    阅读次数:256
Spring MVC Converter 什么时候执行转换
一般从前台传到后台的参数都需要转换,比如转换成Date 类型,JsonObject类型,JsonArray类型等等。但是转换这一步spring是在什么时候做的呢? java.text.ParseException : A JSONObject must begin with ‘{‘ at c...
分类:编程语言   时间:2014-11-27 12:59:48    阅读次数:430
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