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驅(qū)動器 1738-IE2CM12
.功能與參數(shù)測試
1.<測試儀>對器件的檢測,僅能反應(yīng)出截止區(qū),放大區(qū)和飽和區(qū).但不
能測出工作頻率的高低和速度的快慢等具體數(shù)值等.
2.同理對TTL數(shù)字芯片而言,也只能知道有高低電平的輸出變化.而無
法查出它的上升與下降沿的速度.
四.晶體振蕩器
1.通常只能用示波器(晶振需加電)或頻率計測試,萬用表等無法測量,
否則只能采用代換法了.
2.晶振常見故障有:a.內(nèi)部漏電,b.內(nèi)部開路c.變質(zhì)頻偏d.外圍相連電
容漏電.這里漏電現(xiàn)象,用<測試儀>的VI曲線應(yīng)能測出.
3.整板測試時可采用兩種判斷方法:a.測試時晶振附近既周圍的有關(guān)
芯片不通過.b.除晶振外沒找到其它故障點.
4.晶振常見有2種:a.兩腳.b.四腳,其中第2腳是加電源的,注意不可隨
意短路.
五.故障現(xiàn)象的分布
1.電路板故障部位的不完全統(tǒng)計:1)芯片損壞30%, 2)分立元件損壞30%,
3)連線(PCB板敷銅線)斷裂30%, 4)程序破壞或丟失10%(有上升趨勢).
2.由上可知,當(dāng)待修電路板出現(xiàn)聯(lián)線和程序有問題時,又沒有好板子,既
不熟悉它的連線,找不到原程序.此板修好的可能性就不大了.
驅(qū)動器 1738-IE2CM12
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1738-232ASCM12
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1738-485ASCM12
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1738-8CFGDLXM12
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1738-8CFGDLXM23
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1738-8CFGDLXM8
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1738-8CFGM12
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1738-8CFGM23
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1738-8CFGM8
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1738-ACNR
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1738-ADN12
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1738-ADN18
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1738-ADN18P
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1738-ADNX
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1738-AENT
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1738-AENTR
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1738-APB
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1738-EP24DC
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1738-EXT1
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1738-EXT3
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1738-FPD
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1738-IA2M12AC3
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1738-IA2M12AC4
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1738-IB16DM12
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1738-IB4DM12
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1738-IB8M12
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1738-IB8M23
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1738-IB8M8
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1738-IE2CM12
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1738-IE2VM12
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1738-IE4CM12
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1738-IJM23
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1738-IR2M12
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1738-IT2IM12
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1738-IV8M12
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1738-OA2M12AC3
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1738-OB16E19M23
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1738-OB16EM12
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1738-OB2EPM12
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1738-OB8EM12
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1738-OB8EM23
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1738-OB8EM8
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1738-OE2CM12
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1738-OE2VM12
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1738-OE4CM12
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1738-OV4EM12
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1738-OW4M12
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1738-OW4M12AC
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1738-SSIM23
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1738-VHSC24M23
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1746-A10
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1746-A13
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1746-A4
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1746-A7
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1746-C16
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1746-C9
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1746-F1
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1746-F3
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1746-F4
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1746-F5
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1746-F8
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1746-F9
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1746-HCA
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1746-HSCE
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1746-HSCE2
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1746-HT
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1746-IA16
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1746-IB16
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1746-IB32
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1746-IM16
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1746-ITB16
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1746-IV16
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1746-IV32
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1746-N2
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1746-NI16I
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1746-NI8
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1746-NO8I
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1746-NO8V
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1746-NR8
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1746-NT8
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1746-OA16
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1746-OA8
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1746-OB16
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1746-OB16E
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1746-OB32
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1746-OB32E
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1746-OBP8
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1746-OV16
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1746-OV32
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1746-OW16
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1746-OW8
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1746-OX8
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1746-P2
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1746-P3
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1746-P4
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1746-R14
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1746-RT25B
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1746-RT25C
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1746-RT25G
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1746-RT25R
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1747-AENTR
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1747-BA
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1747-BAJMPR
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1747-C10
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R88M-G7K515H-S2-Z
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R88M-G7K515H-Z
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R88M-G7K515T-BOS2-Z
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R88M-G7K515T-BO-Z
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R88M-G7K515T-BS2-Z
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R88M-G7K515T-B-Z
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R88M-G7K515T-OS2-Z
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R88M-G7K515T-O-Z
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R88M-G7K515T-S2-Z
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R88M-G7K515T-Z
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R88M-G90010H-BOS2-Z
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R88M-G90010H-BO-Z
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R88M-G90010H-BS2-Z
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R88M-G90010H-B-Z
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R88M-G90010H-OS2-Z
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R88M-G90010H-O-Z
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R88M-G90010H-S2-Z
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R88M-G90010H-Z
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R88M-G90010T-BOS2-Z
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R88M-G90010T-BO-Z
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R88M-G90010T-BS2-Z
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R88M-G90010T-B-Z
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R88M-G90010T-OS2-Z
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R88M-G90010T-O-Z
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R88M-G90010T-S2-Z
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R88M-G90010T-Z
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R88M-GP10030H-BOS2-Z
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R88M-GP10030H-BO-Z
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R88M-GP10030H-BS2-Z
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R88M-GP10030H-B-Z
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R88M-GP10030H-OS2-Z
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R88M-GP10030H-O-Z
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R88M-GP10030H-S2-Z
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R88M-GP10030H-Z
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R88M-GP10030L
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R88M-GP10030T-BOS2-Z
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R88M-GP10030T-BO-Z
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R88M-GP10030T-BS2-Z
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R88M-GP10030T-B-Z
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R88M-GP10030T-OS2-Z
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R88M-GP10030T-O-Z
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R88M-GP10030T-S2-Z
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R88M-GP10030T-Z
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R88M-GP20030H-BOS2-Z
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R88M-GP20030H-BO-Z
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R88M-GP20030H-BS2-Z
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R88M-GP20030H-B-Z
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R88M-GP20030H-OS2-Z
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R88M-GP20030H-O-Z
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R88M-GP20030H-S2-Z
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R88M-GP20030H-Z
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R88M-GP20030T-BOS2-Z
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R88M-GP20030T-BO-Z
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R88M-GP20030T-BS2-Z
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R88M-GP20030T-B-Z
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R88M-GP20030T-OS2-Z
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R88M-GP20030T-O-Z
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R88M-GP20030T-S2-Z
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R88M-GP20030T-Z
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R88M-GP40030H-BOS2-Z
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R88M-GP40030H-BO-Z
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R88M-GP40030H-BS2-Z
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R88M-GP40030H-B-Z
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R88M-GP40030H-OS2-Z
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R88M-GP40030H-O-Z
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R88M-GP40030H-S2-Z
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R88M-GP40030H-Z
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R88M-GP40030T-BOS2-Z
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R88M-GP40030T-BO-Z
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R88M-GP40030T-BS2-Z
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R88M-GP40030T-B-Z
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R88M-GP40030T-OS2-Z
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R88M-GP40030T-O-Z
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R88M-GP40030T-S2-Z
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R88M-GP40030T-Z
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R88M-K05030H
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R88M-K05030H-BOS2-Z
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R88M-K05030H-BO-Z
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