标签: protect

ESDprotectBRIEFESDProtectionAudioInputandOutputLinesBackgroundElectronicsystemsaresensitivetobothexternalandinternalsourcesofovervoltagetransients.ThiscanbeintheformofexternalElectroStaticDischarge(ESD)orinternallygeneratedElectricalFastTransients(EFT).ThepurposeofthisapplicationbriefistodetailAudioportprotection.createdbytheelectronicsystem.Sourcesincludeswitchinghighcurrentloads(suchastheflybacktransformer),pumplasersorotherharshenvironments.TheEFTcanbeintroducedviathepowersupplyorinductivelycoupledontoasignalline.Regardlessofthemethodofintroduction,theresultsmaybesoftorhardfailuressimilartoESDfailures.TECHTheProblemExternallygeneratedESDpulsesareintroducedthroughtheAudiojacks……

可靠性是现代电话和通信装备的首要特性，设计者仔细设计为温度和电压变化引起的故障的保护电路，增加冗余设计，特别是电源。LTC1921取代了复杂的监控电路，在8引脚MSOP封装中集成了简易高精度监控系统。advertisementMonitorNetworkCompliant……

ESDProtectDesignNoteESDESDRegulationAndImmunitySolutionDesignIEC61000-4-2IEC801-2HistoryFirstpublished1984IgnoredtheinitialspikedescribedbyM.King[1]OnlyrequiredpositivepolarityP.Richmanexplainedtheinitialspike[2]andH.Rysershoweditwasimportant[3]IEChasbeenrevised……