R7732_7733_7735是Richpower公司推出的高效AC TO DC 電源PWM控制芯片,最大功率可以做到75W;如有需求請聯(lián)系我電話：021-54262182EXT 114 (Eric) QQ ：1187337351
上傳時間： 2013-11-20
上傳用戶：xz85592677
長電c2383 TO-92L
上傳時間： 2013-11-09
上傳用戶：wvbxj
高的工作電壓高達100V N雙N溝道MOSFET同步驅(qū)動 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.
上傳時間： 2013-10-24
上傳用戶：wd450412225
本文分析了ARM-Linux下IIC總線及其設(shè)備驅(qū)動的層次結(jié)構(gòu)，指出了IIC設(shè)備添加與驅(qū)動實現(xiàn)的途徑，詳細闡述了如何采用通用i2c-dev.c驅(qū)動常規(guī)IIC設(shè)備、如何編寫特定IIC設(shè)備的probe方式驅(qū)動、怎樣設(shè)計動態(tài)加載的簡易IIC“客服-驅(qū)動”、怎樣使用GPIO模擬IIC總線快速驅(qū)動設(shè)備等常用具體實現(xiàn)過程和關(guān)鍵環(huán)節(jié)，并說明了這些方法的優(yōu)勢和不足。
標簽： ARM-Linux-IIC 設(shè)備 驅(qū)動實現(xiàn)
上傳時間： 2013-10-13
上傳用戶：xingisme
畢業(yè)設(shè)計 USB TO Gigabit LAN 網(wǎng)卡 隨著網(wǎng)絡(luò)技術(shù)飛速發(fā)展，多媒體的應(yīng)用越來越多，人們對網(wǎng)絡(luò)的要求也越來越高，為了適應(yīng)市場的需求，網(wǎng)卡出現(xiàn)了。它以其結(jié)構(gòu)簡單、成本低廉、兼容性強等諸多的優(yōu)越性得到了廣泛的應(yīng)用。由于網(wǎng)絡(luò)的應(yīng)用越來越廣泛，網(wǎng)卡的應(yīng)用也越來越多、功能越來越強大。開始時由于技術(shù)方面的限制，網(wǎng)卡只有10Mbps的吞吐量，由于網(wǎng)絡(luò)技術(shù)的發(fā)展，100Mbps吞吐量的網(wǎng)卡開始在市場上得到廣泛的應(yīng)用。而現(xiàn)在1000Mbps吞吐量的網(wǎng)卡的出現(xiàn)又給網(wǎng)絡(luò)的傳輸帶來了新的活力。 論文中主要闡述了基于以太網(wǎng)的USB TO Gigabit LAN網(wǎng)卡的設(shè)計與制作。論文首先對以太網(wǎng)進行了介紹，緊接著講了網(wǎng)卡的基本知識。隨后又對USB TO Gigabit LAN網(wǎng)卡的電路設(shè)計和制作進行了詳細的描述。論文還包括了USB TO Gigabit LAN網(wǎng)卡的調(diào)試等內(nèi)容。
上傳時間： 2014-12-02
上傳用戶：wab1981
LINUX和WINDIWS服務(wù)器的統(tǒng)一管理初探
上傳時間： 2013-10-09
上傳用戶：妄想演繹師
單片機和嵌入式LINUX開發(fā)的那點事兒
上傳時間： 2013-11-05
上傳用戶：takako_yang
PICKIT™ 2 PROGRAMMER-TO-GO USER GUIDE The PICkit 2 Programmer-To-Go functionality allows a PIC MCU memory image to be downloaded into the PICkit 2 unit for later programming into a specific PIC MCU. No software or PC is required to program devices once the PICkit 2 unit is set up for Programming-To-Go. A USB power source for the PICkit 2 is all that is needed.
標簽： PROGRAMMER-TO PICKIT 8482
上傳時間： 2013-10-29
上傳用戶：ca05991270
linux 中斷和設(shè)備驅(qū)動 本章介紹L i n u x內(nèi)核是如何維護它支持的文件系統(tǒng)中的文件的，我們先介紹 V F S ( Vi r t u a lFile System，虛擬文件系統(tǒng))，再解釋一下L i n u x內(nèi)核的真實文件系統(tǒng)是如何得到支持的。L i n u x的一個最重要特點就是它支持許多不同的文件系統(tǒng)。這使 L i n u x非常靈活，能夠與許多其他的操作系統(tǒng)共存。在寫這本書的時候， L i n u x共支持1 5種文件系統(tǒng)： e x t、 e x t 2、x i a、 m i n i x、 u m s d o s、 msdos 、v f a t、 p r o c、 s m b、 n c p、 i s o 9 6 6 0、 s y s v、 h p f s、 a ffs 和u f s。無疑隨著時間的推移，L i n u x支持的文件系統(tǒng)數(shù)還會增加。
標簽： linux 中斷 設(shè)備驅(qū)動
上傳時間： 2013-11-13
上傳用戶：zxh122
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C-buses that connect to the same downstreamI2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are usedto select one master at a time. Either master at any time can gain control of the slavedevices if the other master is disabled or removed from the system. The failed master isisolated from the system and will not affect communication between the on-line masterand the slave devices on the downstream I2C-bus.
上傳時間： 2013-10-09
上傳用戶：3294322651
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