控制器 1757-SRM
.組合代換
組合代換就是把同一型號(hào)的多塊IC內(nèi)部未受損的電路部分,重新組合成一塊完整的IC,用以代替功能不良的IC的方法。對(duì)買不到原配IC的情況下是十分適用的。但要求所利用IC內(nèi)部完好的電路一定要有接口引出腳。
非直接代換關(guān)鍵是要查清楚互相代換的兩種IC的基本電參數(shù)、內(nèi)部等效電路、各引腳的功能、IC與外部元件之間連接關(guān)系的資料。實(shí)際操作時(shí)予以注意:
⑴集成電路引腳的編號(hào)順序,切勿接錯(cuò);
⑵為適應(yīng)代換后的IC的特點(diǎn),與其相連的外圍電路的元件要作相應(yīng)的改變;
⑶電源電壓要與代換后的IC相符,如果原電路中電源電壓高,應(yīng)設(shè)法降壓;電壓低,要看代換IC能否工作。
⑷代換以后要測(cè)量IC的靜態(tài)工作電流,如電流遠(yuǎn)大于正常值,則說明電路可能產(chǎn)生自激,這時(shí)須進(jìn)行去耦、調(diào)整。若增益與原來有所差別,可調(diào)整反饋電阻阻值;
⑸代換后IC的輸入、輸出阻抗要與原電路相匹配;檢查其驅(qū)動(dòng)能力。
⑹在改動(dòng)時(shí)要充分利用原電路板上的腳孔和引線,外接引線要求整齊,避免前后交叉,以便檢查和防止電路自激,特別是防止高頻自激;
[7]在通電前電源Vcc回路里再串接一直流電流表,降壓電阻阻值由大到小觀察集成電路總電流的變化是否正常。
控制器 1757-SRM
1756-A10 |
1756-A13 |
1756-A17 |
1756-A4 |
1756-A7 |
1756-BA1 |
1756-BA2 |
1756-BATA |
1756-CN2 |
1756-CN2R |
1756-CNB |
1756-CNBR |
1756-DHRIO |
1756-DNB |
1756-EN2T |
1756-EN2TR |
1756-EN3TR |
1756-ENBT |
1756-ENET |
1756-EWEB |
1756-HSC |
1756-IA16 |
1756-IA16I |
1756-IA32 |
1756-IB16 |
1756-IB16D |
1756-IB16I |
1756-IB32 |
1756-IF16 |
1756-IF16H |
1756-IF8 |
1756-IF8H |
1756-IF8I |
1756-IF6I |
1756-IF6CIS |
1756-IT6I |
1756-IR6I |
1756-IR12 |
1756-IRT8I |
1756-IT6I2 |
1756-IM16I |
1756-L61 |
1756-L62 |
1756-L63 |
1756-L64 |
1756-L65 |
1756-L71 |
1756-L71S |
1756-L72 |
1756-L72S |
1756-L73 |
1756-L74 |
1756-L75 |
1756-L81E |
1756-L81ES |
1756-L82E |
1756-L82ES |
1756-L83E |
1756-L83ES |
1756-L84E |
1756-L84ES |
1756-L85E |
1756-L8SP |
1756-M02AE |
1756-M02AS |
1756-M03SE |
1756-M08SE |
1756-M16SE |
1756-N2 |
1756-OA16 |
1756-OA16I |
1756-OB16D |
1756-OB16E |
1756-OB16I |
1756-OB32 |
1756-OF4 |
1756-OF8 |
1756-OF8I |
1756-OW16I |
1756-OF6VI |
1756-OF6CI |
1756-PA72 |
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1756-PA75R |
1756-PB72 |
1756-PB75 |
1756-RM |
1756-RM2 |
1756-TBCH |
1756-TBNH |
1756-TBS6H |
1756-TBSH |
1757-SRM |
800T-N61KF4BDEE |
800T-N61KF4BEGA |
800T-N61KF4BV |
800T-N61KF4C |
800T-N61KF4CAEN |
800T-N61KF4CAEX |
800T-N61KF4CALX |
800T-N61KF4CAXD |
800T-N61KF4CAXX |
800T-N61KF4CDXX |
800T-N61KF4CNNA |
800T-N61KF4DAXD |
800T-N61KF4DAXX |
800T-N61KF4DDDD |
800T-N61KF4DDEE |
800T-N61KF4DDGX |
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800T-N61KF4EEDD |
800T-N61KF4EXGX |
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800T-N61KF4JDEX |
800T-N61KF4JJJG |
800T-N61KF4MAXX |
800T-N61KF4MCXC |
800T-N61KF4NANA |
800T-N61KF4NAND |
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