MIL-STD-1521B (NOTICE 3)

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MIL-STD-1521B (NOTICE 3), MILITARY STANDARD: TECHNICAL REVIEWS AND AUDITS FOR SYSTEMS, EQUIPMENTS, AND COMPUTER SOFTWARE (10 APR 1995) [NO S/S DOCUMENT; USE SMC-S-21 IN LIEU OF MIL-STD-1521B]., MIL-STD-1521B (USAF), dated 4 June 1985, NOTICE 1 dated 19 December 1985, and NOTICE 2 dated 17 July 1992, are hereby canceled. Functional. Configuration Audit and physical Configuration Audit requirements were incorporated into MIL-STD-973, "Configuration Management." All other areas have been canceled without replacement.
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【英文标准名称】:Transformersandmotortransformersforuseinaudio-,radio-,andtelevision-typeappliances
【原文标准名称】:音频、无线电和电视类装置用变压器与电机变压器
【标准号】:UL1411-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-04-16
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:音频系统;音频变压器;自耦变压器;设计;作标记;无线电和相关发声设备;电视设备;电视接收机;测试;变压器;电视工程
【英文主题词】:Audiosystems;Audio-frequencytransformer;Autotransformers;Design;Marking;Radioandassociatedsoundequipment;Televisionequipment;Televisionreceivers;Testing;Transformers;Videoengineering
【摘要】:Thedocumentapplytotransformers,autotransformers,andmotor-transformersintendedtobeusedinaudio-,radio-,andtelevision-typeappliancesinwhichtheprimarywindingisconnectedacrossthesupplycircuit.TherequirementsinSections4-15,23-26,28,and29alsoapplytotransformersintendedforuseinhigh-frequency,switching-typepowersuppliesinwhichthetransformerprovidesisolationfromthesupplycircuit.Theserequirementsdonotapplytotransformersthatareintendedtotransformonlyaudio,video,andothersignalwaveforms.ThosetransformersarecoveredbytheStandardforIsolatingSignalandFeedbackTransformersforUseinElectronicEquipment,UL1876.Theserequirementsapplytoatransformerormotortransformerthatincludesaseparatecurrent-limitingimpedancesuchasapositivetemperaturecoefficient(PTC)devicecomplyingwiththerequirementsforthermistor-typedevices,oraresistorcomplyingwiththeStandardforFusingResistorsandTemperature-LimitedResistorsforRadio-andTelevision-TypeAppliances,UL1412.Aproductthatcontainsfeatures,characteristics,components,materials,orsystemsnewordifferentfromthosecoveredbytherequirementsinthisstandard,andthatinvolvesariskoffireorofelectricshockorinjurytopersonsshallbeevaluatedusingappropriateadditionalcomponentandend-productrequirementstomaintainthelevelofsafetyasoriginallyanticipatedbytheintentofthisstandard.Aproductwhosefeatures,characteristics,components,materials,orsystemsconflictwithspecificrequirementsorprovisionsofthisstandarddoesnotcomplywiththisstandard.Revisionofrequirementsshallbeproposedandadoptedinconformancewiththemethodsemployedfordevelopment,revision,andimplementationofthisstandard
【中国标准分类号】:L17
【国际标准分类号】:29_180
【页数】:
【正文语种】:英语