SJ 765-74 3DD50型和3DD51型NPN硅外延平面低频大功率三极管
作者:标准资料网 时间:2024-05-05 06:19:34 浏览:8202
来源:标准资料网
基本信息
标准名称: | 3DD50型和3DD51型NPN硅外延平面低频大功率三极管 |
英文名称: | Detail specification for silicon NPN eqitaxial planar low-frequency high power transistors,Type 3DD50 and 3DD51 |
中标分类: |
能源、核技术 >>
能源、核技术综合 >>
技术管理 |
发布日期: | 1974-10-01 |
实施日期: | 1974-10-01 |
首发日期: | 1900-01-01 |
作废日期: | 2010-01-20 |
出版日期: | 1900-01-01 |
页数: | 5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】:Plasticfilmprintingribbonsforofficemachines--Characteristicsofcores
【原文标准名称】:办公机械用塑料膜打印带.卷筒特性
【标准号】:JISB9521-1985
【标准状态】:作废
【国别】:日本
【发布日期】:
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:GeneralMachinery
【标准类型】:()
【标准水平】:()
【中文主题词】:打字;打印带
【英文主题词】:printingribbons;typewriting
【摘要】:
【中国标准分类号】:Y54
【国际标准分类号】:35_260_10
【页数】:5P;A4
【正文语种】:日语
【英文标准名称】:Railwayapplications.Rollingstockequipment.Shockandvibrationtests
【原文标准名称】:铁路应用设施.铁路车辆设备.撞击和振动试验
【标准号】:BSEN61373-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-10-31
【实施或试行日期】:2010-10-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:认证;电力牵引;电气设备;电驱动装置;设备;铁路应用设施;铁道车辆;铁路;随即变数;铁路车辆;冲击试验;冲击;试验;交通车辆;车辆;振动;振动试验
【英文主题词】:Certification;Electrictraction;Electricalequipment;Electrically-operateddevices;Equipment;Railwayapplications;Railwayvehicles;Railways;Randomvariable;Rollingstocks;Shocktests;Shocks;Testing;Trafficvehicles;Vehicles;Vibration;Vibrationtests
【摘要】:ThisInternationalStandardspecifiestherequirementsfortestingitemsofequipmentintendedforuseonrailwayvehicleswhicharesubsequentlysubjectedtovibrationsandshockowingtothenatureofrailwayoperationalenvironment.Togainassurancethatthequalityoftheequipmentisacceptable,ithastowithstandtestsofreasonabledurationthatsimulatetheserviceconditionsseenthroughoutitsexpectedlife.Simulatedlong-lifetestingcanbeachievedinanumberofwayseachhavingtheirassociatedadvantagesanddisadvantages,thefollowingbeingthemostcommon:a)amplification:wheretheamplitudesareincreasedandthetimebasedecreased;b)timecompression:wheretheamplitudehistoryisretainedandthetimebaseisdecreased(increaseofthefrequency);c)decimation:wheretimeslicesofthehistoricaldataareremovedwhentheamplitudesarebelowaspecifiedthresholdvalue.Theamplificationmethodasstatedina)above,isusedinthisstandardandtogetherwiththepublicationsreferredtoinClause2;itdefinesthedefaulttestproceduretobefollowedwhenvibrationtestingitemsforuseonrailwayvehicles.However,otherstandardsexistandmaybeusedwithprioragreementbetweenthemanufacturerandthecustomer.Insuchcasestestcertificationagainstthisstandardwillnotapply.WhereserviceinformationisavailabletestscanbeperformedusingthemethodoutlinedinAnnexA.Ifthelevelsarelowerthanthosequotedinthisstandard,equipmentispartiallycertifiedagainstthisstandard(onlyforserviceconditionsgivingfunctionaltestvalueslowerthanorequaltothosespecifiedinthetestreport).Whilstthisstandardisprimarilyconcernedwithrailwayvehiclesonfixedrailsystems,itswideruseisnotprecluded.Forsystemsoperatingonpneumatictyres,orothertransportationsystemssuchastrolleybuses,wherethelevelofshockandvibrationclearlydifferfromthoseobtainedonfixedrailsystems,thesupplierandcustomercanagreeonthetestlevelsatthetenderstage.Itisrecommendedthatthefrequencyspectraandtheshockduration/amplitudebedeterminedusingtheguidelinesinAnnexA.Equipmenttestedatlevelslowerthanthosequotedinthisstandardcannotbefullycertifiedagainsttherequirementsofthisstandard.
【中国标准分类号】:S04
【国际标准分类号】:17_160;45_060_01
【页数】:40P;A4
【正文语种】:英语