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變頻器IC695HSC308
.功能與參數測試
1.<測試儀>對器件的檢測,僅能反應出截止區,放大區和飽和區.但不
能測出工作頻率的高低和速度的快慢等具體數值等.
2.同理對TTL數字芯片而言,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.內部漏電,b.內部開路c.變質頻偏d.外圍相連電
容漏電.這里漏電現象,用<測試儀>的VI曲線應能測出.
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
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.故障現象的分布
1.電路板故障部位的不完全統計: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,當待修電路板出現聯線和程序有問題時,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.
變頻器IC695HSC308
| IC695CPK330 |
| IC695CPE330 |
| IC695ACC402 |
| IC695ACC652 |
| IC695GCG001 |
| IC695RMX228 |
| IC695CEP001 |
| IC695ECM850 |
| IC695DEMP002 |
| IC695PSD140 |
| IC695PSD040 |
| IC695ALG704 |
| IC695ALG708 |
| IC695PRS015 |
| IC695ALG628 |
| IC695ALG626 |
| IC695PNS001 |
| IC695ALG608 |
| IC695PMM335 |
| IC695PSA040 |
| IC695NIU001 |
| IC695ALG600 |
| IC695NKT001 |
| IC695PBM300 |
| IC695PSA140 |
| IC695MDL664 |
| IC695ALG508 |
| IC695HSC304 |
| IC695HSC308 |
| IC695ALG306 |
| IC695FTB001 |
| IC695LRE001 |
| IC695MDL765 |
| IC695PNC001 |
| IC695NKT002 |
| IC695DEM006 |
| IC695DEM004 |
| IC695ALG106 |
| IC695ACC003 |
| IC695ACC302 |
| IC695PBS301 |
| IC695ACC650 |
| IC695CRH037 |
| IC695ACC002 |
| IC695CRH038 |
| IC695ALG616 |
| IC695ACC400 |
| IC695CRH035 |
| IC695CRH034 |
| IC695CRH033 |
| IC695CRH028 |
| IC695ETM001 |
| IC695CRH027 |
| IC695CRH031 |
| IC695CRH032 |
| IC695CRH029 |
| IC695CRH036 |
| IC695CRH026 |
| IC695CRH023 |
| IC695CRH020 |
| IC695CRH024 |
| IC695CRH021 |
| IC695CRU320 |
| IC695CRH039 |
| IC695CRH030 |
| IC695CRH014 |
| IC695CRH015 |
| IC695ALG112 |
| IC695CRH022 |
| IC695CRH004 |
| IC695CRH003 |
| IC695CRH009 |
| IC695CRH017 |
| IC695CRH016 |
| IC695CRH001 |
| IC695CRH018 |
| IC695CRH008 |
| IC695CRH007 |
| IC695CRH019 |
| IC695CRH006 |
| IC695CRH002 |
| IC695STK010 |
| IC695STK006 |
| IC695CRH010 |
| IC695CMM004 |
| IC695CPE310 |
| IC695ALG808 |
| IC695DEM002 |
| IC695CPE400 |
| IC695ACC415 |
| IC695ACC414 |
| IC695ACC413 |
| IC695ACC403 |
| IC695CBL003 |
| IC695CPK400 |
| IC695EIS001 |
| IC695EDS001 |
| IC695ACC412 |
| IC695CPE302 |
| IC695CDEM006 |
| IC695CPL410 |
| IC695CKL410 |
| IC695PNS101 |
| R88M-G7K515H-S2-Z |
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| R88M-GP20030T-BS2-Z |
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| R88M-GP40030H-B-Z |
| R88M-GP40030H-OS2-Z |
| R88M-GP40030H-O-Z |
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| R88M-GP40030H-Z |
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| R88M-GP40030T-Z |
| R88M-K05030H |
| R88M-K05030H-BOS2-Z |
| R88M-K05030H-BO-Z |
