Florinel TV Posted July 14, 2022 Share Posted July 14, 2022 Stie cineva ce tranzistori smd sunt cu aceste coduri 12W 702 704 capsula cred ca este SOT23 , asa arata https://ro.mouser.com/ProductDetail/Nexperia/PDTC114ET235?qs=LOCUfHb8d9vxgFUjS2VP2Q%3D%3D&gclid=CjwKCAjw_b6WBhAQEiwAp4HyILbT280_wODRRCkKV_foeengeJK0Wc4G9MkCppTC2vQIKdWZ-6Q6PRoCvHYQAvD_BwE https://www.alldatasheet.com/datasheet-pdf/pdf/18277/PHILIPS/PDTA114ET.html Link to comment
Marian Posted July 14, 2022 Share Posted July 14, 2022 Variante 2N7002 Vezi aici: https://www.s-manuals.com/smd/12 https://www.s-manuals.com/smd/70 Link to comment
Florinel TV Posted July 14, 2022 Author Share Posted July 14, 2022 (edited) Asa am gasit si eu, dar nu este 2N7002 , acest tranzistor este de la programatorul RT809H la care era in scurt total, am pus 2N7002 si nu merge, pe fiecare pin de la 1 la 48 are cate doi tranzistori , unul este 1AM = 2N7002 si celalalt este 704 = ? , am pus 1AM si nu merge , am schimbat de la alt pin si acum acel pin merge , este posibil sa fie 2N7002K A fost defect tranzistorul de la pin 26, acum am luat tranzistorul de la pin 48 si acum spune ca problema este pe pin 48 este normal ca acolo este fara tranzistor, programatorul merge de citit/scris orice memorie fie eeprom fie nand sau eMMC, dar vreau sa fie complet , la citire imi da mesajul sai dau ignore si apoi citeste, de citit citeste corect ca am comparat cu celelalte programatoare Edited July 14, 2022 by Florinel TV Link to comment
sesebe Posted July 14, 2022 Share Posted July 14, 2022 (edited) 1AM este tranzistor bipolar NPN de comutatie nu MOSfet . 2N7002 este tranzistor MOSfet canal N. Poti desena, te rog, schema din jurul unui pin folosind de exemplu doar desenul capsulii si cu pinii numerotati. Edited July 14, 2022 by sesebe Link to comment
Florinel TV Posted July 15, 2022 Author Share Posted July 15, 2022 Sa sti ca ai dreptate, nu stiu de ce credeam eu ca este mosfet din lipsa de timp si din graba asa am crezut nu mam mai uitat pe catalog, 1AM = 2N3904 Va multumesc pentru raspunsuri, trebuie sa caut un 2N7002 si va merge , revin cu rezultatul Link to comment
Florinel TV Posted July 15, 2022 Author Share Posted July 15, 2022 Uite asa da eroare la selftest cu tranzistorul dat afara Read 001: The pin detection value is 0x800000F,it is no good. 002: Start reading chip...... 003: Buffer data checksum: 16bits_0x205E £¬32bits_0x0000205E : 004: 2. VCC open circuit:48 005: 4. VPP open circuit:48 006: 7. GND short circuit:47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 007: Elapsed time: 1.917 seconds£¬average speed of 68 bytes/sec. 008: >------------------------------------OK---------------------------------------< Write 009: The pin detection value is 0x800000F,it is no good. 010: Start writing chip...... 011: Buffer data checksum: 16bits_0x136C £¬32bits_0x0000136C : 012: 1. ZIF open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 013: 2. VGA ISP 4/11/12/15 open circuit 014: SelfTestBoard 1 is not well placed. 015: 3. HMI open circuit 016: 4. K26-K33 are open circuit 017: 4. K40-K47 are open circuit 018: 6. Pull-up-20K open circuit:1 2 3 4 5 6 7 8 48 47 46 45 44 43 42 41 9 10 11 12 13 14 15 16 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 32 31 30 29 28 27 26 25 019: Elapsed time: 1.306 seconds£¬average speed of 50 bytes/sec. 020: >------------------------------------OK---------------------------------------< Verify 021: The pin detection value is 0x800000F,it is no good. 022: Start verifying chip...... 023: Buffer data checksum: 16bits_0x136C £¬32bits_0x0000136C : 024: SelfTestBoard 2 is not well placed. Nu am placi de test Asa arata cand era fara tranzistor, iar cand era in scurt arata altfel, acum dupa ce am pus 2N7002 arata ok Read 001: Start reading chip...... 002: Buffer data checksum: 16bits_0x09F6 £¬32bits_0x000009F6 : 003: 2. VCC open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 004: 4. VPP open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 005: 6. GND open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 006: Elapsed time: 1.916 seconds£¬average speed of 68 bytes/sec. 007: >------------------------------------OK---------------------------------------< Write 008: Start writing chip...... 009: Buffer data checksum: 16bits_0x0BF4 £¬32bits_0x00000BF4 : 010: 1. ZIF open circuit:48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 011: 2. VGA ISP 4/11/12/15 open circuit 012: SelfTestBoard 1 is not well placed. 013: 3. HMI open circuit 014: 4. K26-K33 are open circuit 015: 4. K40-K47 are open circuit 016: 5. Pull-up-1K open circuit:47 46 45 44 43 42 41 40 33 32 31 30 29 28 27 26 017: 6. Pull-up-20K open circuit:1 2 3 4 5 6 7 8 48 47 46 45 44 43 42 41 9 10 11 12 13 14 15 16 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 32 31 30 29 28 27 26 25 018: Elapsed time: 1.313 seconds£¬average speed of 50 bytes/sec. 019: >------------------------------------OK---------------------------------------< Verify 020: Start verifying chip...... 021: Buffer data checksum: 16bits_0x0BF4 £¬32bits_0x00000BF4 : 022: SelfTestBoard 2 is not well placed. Link to comment
misuraelectronic Posted July 15, 2022 Share Posted July 15, 2022 (edited) Cred ca nu esti in toate apele tale daca tu crezi ca intereseaza pe cineva de pe planeta asta sa stea sa compare liniile de program intre ele , daca pui sau nu pui un tranzistor smd la unul din terminale ... Ai primit raspunsul la intrebarea ta ... gata , sa fii sanatos ...nu mai polua degeaba topicul cu informatii care nu valoreaza nici 2 bani gauriti ... Oricum ar fi , te-ai facut de risul curcilor ...auzi pozna la el ... sa ai 13700 de postari ca electronist ...si tu sa fii bita si sa nu fii in stare sa identifici corect 3 prapadite de tranzistoare smd .... ba mai mult ... sa montezi piese aiurea si sa ne intrebi pe noi ...bai , dar de ce nu merge ? Asta stii ce demonstreaza ? nivelul tau aproape zero de pregatire ca si electronist pursinge ... ps ...exista 3 tipuri de zero ... zero barat .... zero .... si aproape zero ... totusi , trebuie sa fii mindru ca nu esti chiar ultimul ... esti ante- penultimul in ierarhie ... Edited July 15, 2022 by misuraelectronic Link to comment
Florinel TV Posted July 15, 2022 Author Share Posted July 15, 2022 (edited) Cand nul baga nimeni in seama . se baga singur asta dovedeste tot ce stie Edited July 15, 2022 by Florinel TV Link to comment
misuraelectronic Posted July 15, 2022 Share Posted July 15, 2022 Acum 4 minute, Florinel TV a spus: Cand nul baga nimeni in seama . se baga singur asta dovedeste tot ce stie ai perfecta dreptate ...cu umilinta maxima recunosc asta ...insa nul este un singur lucru ...bagajul tau de cunostinte in domeniul gramaticii... Link to comment
dan cod Posted July 16, 2022 Share Posted July 16, 2022 La 15.07.2022 la 9:35, Florinel TV a spus: Va multumesc pentru raspunsuri, trebuie sa caut un 2N7002 si va merge , revin cu rezultatul Mai sus spuneai ca ai pus 2N7002 și nu merge. Aici spui ca o sa cauți 2N7002 și va merge. Postez fiindcă ma interesează subiectul. Link to comment
Florinel TV Posted July 16, 2022 Author Share Posted July 16, 2022 (edited) Nu am pus 2N7002 , eu pusesem 1AM crezand cai 2N7002 , nu stiu de ce am crezut ca 1AM este 2N7002, nu ma uitasem pe catalogul de smd, din lipsa de timp nu m am mai uitat pe catalog Acest mosfet 2N7002 are mai multe coduri 702 , 704 , 12w , LWW, eu am gasit din recuperari 702 si acum merge ok Edited July 16, 2022 by Florinel TV Link to comment
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