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General Description The LM621 is a bipolar IC designed for commutation of brushless DC motors. The part is compatible with both three- and four-phase motors. It can directly drive the power switching devices used to drive the motor. The LM621 provides an adjustable dead-time circuit to eliminate ``s ...

Logic2007中文教程 PADS Logic功能，特点及使用教程 本教程描述了PADS Logic 的各种功能和特点、以及使用方法。这些功 能包括： 如何在PADS Logic 中使用工作区(Working Area)。 如何在PADS Logic 的元件库中定义目标库(Library)。 如何从库中搜索有关的元件(Part)。 如何添加连线(Connection)、总线(Bus)、使用页间连接符 ...

·详细说明：MPEG4解压缩算法源代码，研究其中关于错误处理部分。-MPEG4 solution compression calculated the law origin code, studies about the error processing part. 文件列表(点击判断是否您需要的文件):   DECORE   ......\BUILD   .

Abstract: Specifications such as noise, effective number of bits (ENOB), effective resolution, and noise-free resolution inlarge part define how accurate an ADC really is. Consequently, understanding the performance metrics related to noise isone of the most difficult aspects of transitioning from ...

Silicon Motion, Inc. has made best efforts to ensure that the information contained in this document is accurate andreliable. However, the information is subject to change without notice. No responsibility is assumed by SiliconMotion, Inc. for the use of this information, nor for infringements of pa ...

Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This wor ...

Abstract: The rapid build out of today's smart grid raises a number of security questions. In this article,we review two recent well-documented security breaches and a report of a security gap. These situationsinclude a 2009 smart-meter hack in Puerto Rico; a 2012 password discovery in grid di ...

Part Number Iout(A) Vin (Recommended) Vout(V) Dropout(V) Package Operating Temp(°C) AMS1117 1 ≦15 1.2 1.5 1.8 2.5 3.3 5 Adj 2.85 ≦1.3 SOT-223 /TO-252 -20~125

  The LTC3546 is a dual output current mode buck regulatorwith fl exible output current partitioning. Beyondthe advantages normally associated with dual outputregulators (reduced size, cost, EMI and part count, withimproved effi ciency), the LTC3546’s outputs can bepartitioned for eit ...

  Telecommunication, satellite links and set-top boxes allrequire tuning a high frequency oscillator. The actualtuning element is a varactor diode, a 2-terminal device thatchanges capacitance as a function of reverse bias voltage.1 The oscillator is part of a frequency synthesizingloop, as ...