• DSH 256A/291(GENERALITY)确认电气绝缘耐热等级/CB测试报告及证书变更次数

    DSH 256A/2...

    DSH 256ASubject: Thermal evaluation and classification of electrical insulationQuestion:Can the manu...

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  • DSH 288/289(IEC 60065)半导体器件区分/音频放大器故障条件

    DSH 288/28...

    DSH 288Subject: Semiconductor DevicesQuestion:Does the wording "Semiconductor Devices" inc...

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  • DSH 290(IEC 60950-1)RJ模块化连接器的混用

    DSH 290(IE...

    Subject: Miss-mating of connectorsQuestion:It is very common to use modular connectors (e.g. RJ-11, ...

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