tag 标签: inverter

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  • 热度 3
    2010-1-22 11:46
    4254 次阅读|
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    Dear Readers,   A section of semiconductor engineers are delighted at the sudden prospect they are witnessing very silently! They are not the ones who have been enjoying the limelight of system ICs or memory. Rather they belong to the ‘ordinary’ class of Power Semiconductors! Why is there a sudden importance? Will it sustain the momentum? Let’s look at some of the factors briefly.   Summer of 2003 – Europe with generally a mild climate experienced a sizzling heat. Very low percentage of homes was equipped with air conditioners. The sizzler claimed many lives and subsequently led to a surge in air conditioner sales. The market surged from 570K units to over 3.8 Mi units in 2003!   The air conditioner market in Japan topped out at 7.8 Mi units/year. It is believed that China’s air conditioner market exceeds 13 Mi units/year! Other BRIC countries and emerging markets are not far behind in their growing demand – especially India and Brazil.   It is not just air conditioners, but also other household electrical equipment like refrigerators, washing machines, dish washers and other white goods, whose demand is steadily rising. Now, why are we talking about these ‘old’ technologies now? Let’s look at the context:   Increasing consumption of the white electrical goods in Europe and the developing world, trigger increase in electricity generating capacity. This is on the rise throughout the world. For example, China is today the 2 nd largest electricity producer in the world. As the Asian market is emerging as a major energy consuming society, the shortage of electricity is becoming a major concern, leading to power cuts and shutdown that we ourselves witness here regularly. Most nations would like to halt the rise in energy consumption of equipment like air conditioners. Inverters that use power semiconductors offer a low cost solution to motor control and show the way to cut energy consumption by half. This is inevitable since nations who are signatory to the Kyoto Protocol which came into effect from Feb 2005, will have to promote energy conservation efforts. The energy saved by inverters directly benefits the consumers and their use will become increasingly common around the world. Newer power device technologies also offer reduction of losses. In India too, we have started rating refrigerators and air conditioners on their power consumption efficiency.   Power electronics will play a key role in hybrid vehicles, automobiles that use fuel cells and home use distributed power systems.   Finally, the development of new power electronics technologies is sure to transform society by lowering the per watt cost just as the IC fabrication advances have transformed the information intensive society by lowering the per bit cost, in the words of Prof. Hiromichi of Tokyo Institute of Technology. As designers and consumers let’s start paying a little more attention to this domain!!
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  • 所需E币: 0
    时间: 2020-9-26 01:18
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    上传者: LGWU1995
    ROHMIHFull-BridgeInverterPo=20kW
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    ROHMIHHalf-BridgeInverterPo=10kW
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    时间: 2020-8-8 17:56
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    上传者: kaidi2003
    ROHMIHFull-BridgeInverterPo=20kW.pdf
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    时间: 2020-8-8 17:56
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    ROHMIHHalf-BridgeInverterPo=10kW.pdf
  • 所需E币: 4
    时间: 2019-12-24 20:29
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    上传者: 二不过三
    摘要:这种接触器电路self-oscillates尽量减少电力消耗上。比较器开关作为必要的线圈之间的滞后限制当前向上和向下斜。电路开始self-oscillate当你增加的电压。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSMISCELLANEOUSCIRCUITSKeywords:selfoscillating,contactdriver,holdpower,step-downconverter,solenoid,switches,relays,Dec03,2002standbyinverter,Allbright2180-40BcontactorAPPLICATIONNOTE1792Self-OscillatingContactorDriverMinimizesHoldPowerAbstract:Thiscontactorcircuitself-oscillatestominimizepowerconsumptionwhenon.Thecomparatorswitchesasnecessarytorampthecoilcurrentupanddownbetweenthehysteresislimits.Thecircuitstartstoself-oscillateasyouincreasethesupplyvoltage.Forswitchingcurrentsgreaterthanabout25A,solenoid-operatedswitchescalledcontactorsareusedinplaceofrelays.Acommonapplicationforcontactorsisindisconnectingthebatteryfroma……
  • 所需E币: 5
    时间: 2019-12-24 19:45
    大小: 105.69KB
    上传者: 16245458_qq.com
    摘要:电荷泵往往供电低功耗和低成本的应用程序需要的最佳选择。本应用笔记讨论了集成的电荷泵,并解释如何计算功耗电荷泵。Maxim>DesignSupport>AppNotes>Automotive>APP725Maxim>DesignSupport>AppNotes>Power-SupplyCircuits>APP725Keywords:powersupply,voltageconverter,dc-dcconverters,chargepumps,switchedcapacitorregulator,regulatedchargepump,unregulatedchargepump,voltagedivider,voltagedoubler,regulatedinverter,buck-boost,regulator,chargepumppowerdissipationJul22,2009APPLICATIONNOTE725DC-DCConversionWithoutInductorsAbstract:Chargepumpsareoftenthebestchoiceforpoweringanapplicationthatrequiresbothlowpowerandlowcost.Thisapplicationnotediscussesintegratedchargepumpsandexplainshowtocalculatepowerdissip……
  • 所需E币: 3
    时间: 2019-12-24 19:28
    大小: 49.41KB
    上传者: quw431979_163.com
    摘要:本应用笔记显示了一个简单和节省空间的方式一般为前端电源的负参考电压。MAX828/MAX829电荷泵提供负参考电压,降低功耗,并增加了偏置电源的可靠性。Maxim>AppNotes>AutomotivePower-SupplyCircuitsKeywords:negativereferencevoltage,common-modenoiseimmunity,chargepump,voltageinverter,rectifier,telecom,front-endpowerDec01,2000supplyAPPLICATIONNOTE971TinyChargePumpProvidesHighlyReliableLow-CostSolutiontoNegativeReferenceVoltageAbstract:Thisapplicationnoteshowsasimpleandspace-savingwaytogeneralanegativereferencevoltageforafront-endpowersupply.TheMAX828/MAX829chargepumpprovidesanegativereferencevoltage,reducespowerdissipation,andincreasesbiassupplyreliability.Additionalinformation:DatasheetfortheMAX828/MAX829Technicalsupport:powerIntelecomapplications,particularlytherectifierapplications……
  • 所需E币: 3
    时间: 2019-12-24 19:16
    大小: 87.21KB
    上传者: 2iot
    摘要:大多是在其倍增器和逆变器配置的电荷泵电压转换器。本文重点介绍的电压分配器电荷泵配置,分为两个输入电压的精确。Maxim>Designsupport>Appnotes>BatteryManagement>APP718Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP718Keywords:chargepump,voltageconverter,doubler,inverter,voltagesplitter,DC-DC,multiplier,chargepumpsMar04,2009APPLICATIONNOTE718PropertiesoftheCharge-PumpVoltageSplitterAbstract:Thecharge-pumpvoltageconverterisknownmostlyinitsdoublerandinverterconfiguration.Thisarticlefocusesonthevoltage-splittercharge-pumpconfiguration,whichdividestheinputvoltagepreciselybytwo.Thoughcommoninmanyoftoday'sDC-DCenergyconverters,thecharge-pumpvoltageconverterisknownmostlyinitsdouble……
  • 所需E币: 4
    时间: 2019-12-24 19:06
    大小: 84.06KB
    上传者: givh79_163.com
    摘要:本教程概述的电池供电设备的监管机构拓扑。讨论包括线性稳压器、充电泵、降压和提升监管机构、逆变器、反激式设计。峰值电流的重要性有了解释,并显示了每个拓扑的原理图。Maxim>AppNotes>BatteryManagementPower-SupplyCircuitsKeywords:regulator,powersupply,regulatortopologies,switchingregulator,step-up,step-down,inverter,linearregulator,chargepump,Jan31,2001buck,boost,flybackAPPLICATIONNOTE660RegulatorTopologiesforBattery-PoweredSystemsAbstract:Thistutorialpresentsanoverviewofregulatortopologiesforbattery-poweredequipment.Thediscussioncoverslinearregulators,chargepumps,buckandboostregulators,inverters,andflybackdesigns.Theimportanceofpeakcurrentisexplained,andschematicsofeachtopologyareshown.AsimilarversionofthisarticleappearedintheJanuary20,1994issueofEDN.IntroductionPowersuppliesareperhapsthemostcrucialelementsofabattery-poweredsystem.Knowled……
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    时间: 2019-12-24 18:41
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    上传者: 238112554_qq
    摘要:这个设计理念显示电压检测器、MAX8211和电荷泵逆变器、MAX680,窗体load-disconnect开关切换。此load-detect开关使用仅8µA,并将暂停从深放电保护可充电电池的电池放电。Maxim>AppNotes>BatteryManagementKeywords:voltagemonitor,voltagedetector,voltageconverter,charge-pumpinverter,voltagetriplerJul09,1998APPLICATIONNOTE968Load-DisconnectSwitchHaltsBatteryDischargetoProtectRechargeableBatteriesAbstract:Thisdesignideashowsavoltagedetector,theMAX8211,andchargepumpinverter,theMAX680,thatformaload-disconnectswitch.Thisload-detectswitchusesonly8Aandhaltsbatterydischargetoprotectrechargeablebatteriesfromdeepdischarge.Deepdischargecandamagearechargeablebattery.TheFigure1circuit,bydisconnectingthebatteryfromitsload,haltsbatterydischargeatapredeterminedlevelofdecliningterminalvoltage.TransistorQ1actsastheswitch.……
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    时间: 2019-12-24 18:12
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    上传者: 2iot
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    时间: 2019-12-24 18:00
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    上传者: givh79_163.com
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  • 所需E币: 5
    时间: 2020-1-16 12:49
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    上传者: 2iot
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