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10 A~2 kA智能化浪涌电流测试仪
agnitudeofthesurgecurrent.Meanwhile,aftertherectifierdiodehaeentestedthroughsurgecurrent,thetechnicalparameterssuchastheactualcurrentwaveformanditsmagnitudehavebeendesigned,examinedanddataprocessed.Thentheactualsurgecurrentvaluewillbeexpressedbynumberontheinstrumentboard.Finally,thetestingmethodanderroranalysishavebeenprovided.Inprac-tice,itisprovedthatthistesterisaneconomical,mbt schuhe sale,appliednewgenerationtestingdeviceusedtotestrelevanttechnicalparameters,andhaeenachievedpracticalapplication.Keywords:storageenergy;surgecurrenttester;peak--to--peakforwardvohagedrop鐾蒜式‘芸:美:耋:(上接第13页)ACompatibleReceiverDesignforRadioSondeLIJun,WANGLuyu(SchoolofMicroandSolidElectronics,UniversityofElectronicScienceandTechnologyofChina,Chengdu610054,MBT schuhe Günstig,China)Abstract:ThispaperpresentsanewtypecompatibleFMreceiverfor1680MHzbandradiosondeswhichareusedinmeteorologymonitoring.Thestructureofthesondeandthesignalcharacteristicsareanalyzed,in-cludingthedatapacketformat,ugg boots reduziert,theRFoscillationcircuit,mbt shoes sale,themodulationtypeandSOon.Accordingtothecomparisonofseveralfrequentlyuseddemodulationmethods,thePhase-shiftandMuhiplyingmethodisadopt_ed.BasedontheFrac-NPLLSabilityoffastfrequencyscanningandflexiblecontrolling,thispaperintro-ducesanewalgorithmforsignalscanningandtracking.ThesuperheterodynearchitecturewithfixedfirstLOandtunablesecondLOisimplemented.AprototypereceivercompatibleofGTS1typeandRS-8Otypeisreal。izedandthemeasurementisuptotheexpectation.Keywords:modulationanddemodulation;weathersonde,p90x calendar;signaltracking;MSP430·l6·
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