SJ 1410-78 3DA98型NPN硅高频大功率三极管
作者:标准资料网
时间:2024-04-29 21:06:22
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来源:标准资料网
基本信息
标准名称: | 3DA98型NPN硅高频大功率三极管 |
英文名称: | Detail specification for silicon NPN high-frequency high power transistors, Type 3DA98 |
中标分类: |
能源、核技术 >>
能源、核技术综合 >>
技术管理 |
发布日期: | 1979-07-01 |
实施日期: | 1979-07-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 3页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 能源 核技术 能源 核技术综合 技术管理
【英文标准名称】:StandardClassificationforServiceabilityofanOfficeFacilityforSpecialFacilitiesandTechnologies
【原文标准名称】:办公设备对特殊设备和技术的适用性标准分类
【标准号】:ASTME1694-1995a(2005)
【标准状态】:现行
【国别】:
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E06.25
【标准类型】:(Classification)
【标准水平】:()
【中文主题词】:适用性;分类;办公室设备
【英文主题词】:building;computercenter;mainframe;conferencecenter;facility;facilityoccupants;function;microwavecommunication;office;performance;rating;ratingscale;requirements;serviceability;simultaneoustranslation;telecommunicationscenter;use;vi
【摘要】:EachFacilityRatingScaleinthisclassificationprovidesameansforestimatingthelevelofserviceabilityofabuildingorfacilityforonetopicofserviceability,andforcomparingthatlevelagainstthelevelofanyotherbuildingorfacility.Thisclassificationcanbeusedforcomparinghowwelldifferentbuildingsorfacilitiesmeetaparticularrequirementforserviceability.Itisapplicabledespitedifferencessuchaslocation,structure,mechanicalsystems,age,andbuildingshape.Thisclassificationcanbeusedtoestimatetheamountofvarianceofserviceabilityfromtargetorfromrequirement,forasingleofficefacility,orwithinagroupofofficefacilities.Thisclassificationcanbeusedtoestimatethefollowing:(1)serviceabilityofanexistingfacilityforusesotherthanitspresentuse;(2)theserviceability(potential)ofafacilitythathasbeenplannedbutnotyetbuilt;and(3)theserviceability(potential)ofafacilityforwhicharemodellinghasbeenplanned.Theuseofthisclassificationdoesnotresultinbuildingevaluationordiagnosis.Buildingevaluationordiagnosisgenerallyrequiresspecialexpertiseinbuildingengineeringortechnologyandtheuseofinstruments,tools,ormeasurements.Thisclassificationappliesonlytofacilitiesthatarebuildingconstructionsorpartsthereof.(Whilethisclassificationmaybeusefulinratingtheserviceabilityoffacilitiesthatarenotbuildingconstructions,suchfacilitiesareoutsidethescopeofthisclassification.)Thisclassificationisnotintendedfor,andisnotsuitablefor,useforregulatorypurposes,norforfirehazardassessmentnorforfireriskassessment.1.1Thisclassificationcoverspairsofscalesforclassifyinganaspectoftheserviceabilityofanofficefacility,thatis,thecapabilityofanofficefacilitytomeetcertainpossiblerequirementsforspecialfacilitiesandtechnologies.1.2Eachpairofscalesshowninprintedside-by-sideonapage,areforclassifyingonetopicofserviceabilitywithinthataspectofserviceability.EachparagraphinanOccupantRequirementScale(see)summarizesonelevelofserviceabilityonthattopicthatoccupantsmightrequire.ThematchingentryintheFacilityRatingScale(See)isatranslationoftherequirementintoadescriptionofcertainfeaturesofafacilitythat,takenincombination,indicatethatthefacilityislikelytomeetthatlevelofrequiredserviceability.1.3TheentriesintheFacilityRatingScale(See)areindicativeandnotcomprehensive.Theyareforquickscanning,toestimateapproximately,quickly,andeconomically,howwellanofficefacilityislikelytomeettheneedsofoneoranothertypeofoccupantgroupovertime.Theentriesarenotformeasuring,knowing,andevaluatinghowanofficefacilityisperforming.1.4Thisclassificationcanbeusedtoestimatethelevelofserviceabilityofanexistingfacility.Itcanalsobeusedtoestimatetheserviceabilityofafacilitythathasbeenplannedbutnotyetbuilt,suchasoneforwhichsingle-linedrawingsandoutlinespecificationshavebeenprepared.1.5Thisclassificationindicateswhatwouldcauseafacilitytoberatedatacertainlevelofserviceability,butitdoesnotstatehowtoconductaserviceabilityratingnorhowtoassignaserviceabilityscore.ThatinformationisfoundinPracticeE1334.ThescalesinthisclassificationarecomplementarytoandcompatiblewithPracticeE1334.Eachrequirestheother.
【中国标准分类号】:Y50
【国际标准分类号】:35_260
【页数】:8P.;A4
【正文语种】:
【英文标准名称】:Resistancewelding-Transformer-rectifierforweldinggunswithintegratedtransformers-Transformer-rectifierunitsoperatingat1000Hzfrequency
【原文标准名称】:电阻焊接.带组合变压器焊接枪用变压器整流器.1000Hz频率工作变压器整流器
【标准号】:ISO22829-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC44
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;介电强度试验;尺寸;电气工程;电气安全;信息技术;作标记;机械试验;整流器;电阻焊接;机器人;安全要求;规范;试验;热试验;变压器;焊接工程;焊接设备;焊枪;焊接变压器;工作频率
【英文主题词】:Definitions;Dielectric-strengthtests;Dimensions;Electricstrength;Electricalengineering;Electricalsafety;Informationtechnology;Inputvoltage;Marking;Mechanicaltesting;Mediumfrequencies;Rectifiers;Resistancewelding;Robots;Safetyrequirements;Specifications;Testing;Thermaltesting;Transformers;Weldingengineering;Weldingequipment;Weldingguns;Weldingtransformers;Workingfrequencies
【摘要】:ThisInternationalStandardisapplicabletotransformer-rectifierunitsasusedinelectricresistanceweldingmachinesoperatingfromapowersupplywithafrequencyof1000Hz,andofaratedvalueoftheinputvoltageequaltoorhigherthan500V.Thesetransformer-rectifierunitsareprimarilyusedinweldinggunswithanintegratedtransformer.Forthesetransformerunits,thisInternationalStandardsupplementstherequirementsgiveninISO5826andISO10656,whichremainapplicableexceptwhereamendedbythisInternationalStandard.
【中国标准分类号】:J64;L17
【国际标准分类号】:25_160_30;29_180
【页数】:26P;A4
【正文语种】:英语