虫虫首页|资源下载|资源专辑|精品软件
登录|注册

Elements

  • add Elements of matrix

    add Elements of matrix

    标签: Elements matrix add of

    上传时间: 2013-12-23

    上传用户:fredguo

  • WALSH CODES AND THEIR PSEUDOALEATORY SEQUENCES - INTRODUCTION - THE REPRESENTATION AS Elements OF

    WALSH CODES AND THEIR PSEUDOALEATORY SEQUENCES - INTRODUCTION - THE REPRESENTATION AS Elements OF THE EXTENS GALOIS FIELDS - THE PSEUDORANDOM SEQUNCE GENERATORS MPLEMENTATION - MAXIMAL SEQUENCE (M-SEQUENCES) - GOLD CODES - KASAMI CODES - EXAMPLES OF PSEUNDOALEATOR SEQUNECES USED IN IS-95

    标签: PSEUDOALEATORY REPRESENTATION INTRODUCTION SEQUENCES

    上传时间: 2017-06-04

    上传用户:JIUSHICHEN

  • 有重复元素的全排列输出There s the output repetitive Elements

    有重复元素的全排列输出There s the output repetitive Elements

    标签: repetitive Elements output There

    上传时间: 2014-01-03

    上传用户:tianyi223

  • 2 vectors with integer Elements. The program is for their weighted average. Labview

    2 vectors with integer Elements. The program is for their weighted average. Labview

    标签: Elements weighted vectors integer

    上传时间: 2017-08-23

    上传用户:大三三

  • Replace every element on the diagonal of an array with the sum of the Elements on the current column

    Replace every element on the diagonal of an array with the sum of the Elements on the current column OR row. Labview

    标签: the diagonal Elements Replace

    上传时间: 2017-08-23

    上传用户:lps11188

  • Elements of Tape Recorder Circuits by Herman and

    Elements of Tape Recorder Circuits by Herman  and Henry Pollak Burstein (z-lib.org).pdf

    标签: 录音机

    上传时间: 2022-01-09

    上传用户:moh2000

  • ADC转换器技术用语 (A/D Converter Defi

    ANALOG INPUT BANDWIDTH is a measure of the frequencyat which the reconstructed output fundamental drops3 dB below its low frequency value for a full scale input. Thetest is performed with fIN equal to 100 kHz plus integer multiplesof fCLK. The input frequency at which the output is −3dB relative to the low frequency input signal is the full powerbandwidth.APERTURE JITTER is the variation in aperture delay fromsample to sample. Aperture jitter shows up as input noise.APERTURE DELAY See Sampling Delay.BOTTOM OFFSET is the difference between the input voltagethat just causes the output code to transition to the firstcode and the negative reference voltage. Bottom Offset isdefined as EOB = VZT–VRB, where VZT is the first code transitioninput voltage and VRB is the lower reference voltage.Note that this is different from the normal Zero Scale Error.CONVERSION LATENCY See PIPELINE DELAY.CONVERSION TIME is the time required for a completemeasurement by an analog-to-digital converter. Since theConversion Time does not include acquisition time, multiplexerset up time, or other Elements of a complete conversioncycle, the conversion time may be less than theThroughput Time.DC COMMON-MODE ERROR is a specification which appliesto ADCs with differential inputs. It is the change in theoutput code that occurs when the analog voltages on the twoinputs are changed by an equal amount. It is usually expressed in LSBs.

    标签: Converter Defi ADC 转换器

    上传时间: 2013-11-11

    上传用户:pans0ul

  • Active Filters

    Power conversion by virtue of its basic role produces harmonics due to theslicing of either voltages or currents. To a large extent the pollution in theutility supply and the deterioration of the power quality has been generatedor created by non-linear converters. It is therefore ironic that power convertersshould now be used to clean up the pollution that they helped to create inthe first place.In a utility system, it is desirable to prevent harmonic currents (which resultin EMI and resonance problems) and limit reactive power flows (whichresult in transmission losses).Traditionally, shunt passive filters, comprised of tuned LC Elements andcapacitor banks, were used to filter the harmonics and to compensate forreactive current due to non-linear loads. However, in practical applicationsthese methods have many disadvantages.

    标签: Filters Active

    上传时间: 2013-11-04

    上传用户:AISINI005

  • 传输线

    第一章  传输线理论一  传输线原理二  微带传输线三  微带传输线之不连续分析第二章  被动组件之电感设计与分析一  电感原理二  电感结构与分析三  电感设计与模拟四  电感分析与量测传输线理论与传统电路学之最大不同,主要在于组件之尺寸与传导电波之波长的比值。当组件尺寸远小于传输线之电波波长时,传统的电路学理论才可以使用,一般以传输波长(Guide wavelength)的二十分之ㄧ(λ/20)为最大尺寸,称为集总组件(Lumped Elements);反之,若组件的尺寸接近传输波长,由于组件上不同位置之电压或电流的大小与相位均可能不相同,因而称为散布式组件(Distributed Elements)。 由于通讯应用的频率越来越高,相对的传输波长也越来越小,要使电路之设计完全由集总组件所构成变得越来越难以实现,因此,运用散布式组件设计电路也成为无法避免的选择。 当然,科技的进步已经使得集总组件的制作变得越来越小,例如运用半导体制程、高介电材质之低温共烧陶瓷(LTCC)、微机电(MicroElectroMechanical Systems, MEMS)等技术制作集总组件,然而,其中电路之分析与设计能不乏运用到散布式传输线的理论,如微带线(Microstrip Lines)、夹心带线(Strip Lines)等的理论。因此,本章以讨论散布式传输线的理论开始,进而以微带传输线为例介绍其理论与公式,并讨论微带传输线之各种不连续之电路,以作为后续章节之被动组件的运用。

    标签: 传输线

    上传时间: 2014-01-09

    上传用户:sunshie

  • 开关电源EMI设计(英文版)

    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 work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic Elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.

    标签: EMI 开关电源 英文

    上传时间: 2013-11-10

    上传用户:1595690