slkslkslk Posted December 21, 2012 Share Posted December 21, 2012 Salut am luat si eu acum cateva zile 4 montaje de vumetre pe leduri de la romydesign din constanta, m-am apucat sa le montez cu schema in fata, iar dupa ce alimentez montaju ledurile se aprind si raman asa, chiar daca bag semnal audio nu se intampla nimic tot aprinse stau, care ar putea fi problema ? voi pune si niste poze Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Verifica corectitudinea montarii componentelor. Quote Link to comment Share on other sites More sharing options...
slkslkslk Posted December 21, 2012 Author Share Posted December 21, 2012 Le-am verificat, eu zic ca sunt puse bine, dar chiar toate 4 sa faca lafel ... ceva nu e bine ...cel de la care le-am luat a spus sa pun un condensator de 470 micro dar eu le-am alimentat dintr-un acumulator 12 v 2 A si am incercat si cu condensator dar degeaba + ca am observat ca masa de la amplificator trebuie pusa cu cea de la alimentarea vumetrului ... Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Monteaza un condensator electrolitic cu valorile indicate pe schema. Verifica corectitudinea montarii tranzistoarelor si diodelor.Schema e functionala. Quote Link to comment Share on other sites More sharing options...
slkslkslk Posted December 21, 2012 Author Share Posted December 21, 2012 voi incerca sa fac asta ... Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Ce tranzistoare ai utilizat? Quote Link to comment Share on other sites More sharing options...
iuli09 Posted December 21, 2012 Share Posted December 21, 2012 daca vad eu bine in poza , condensatorul este montat invers ; eventual o poza de calitate mai buna ne-ar putea lamuri . Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Precizeaza ce tranzistoare ai montat pe placi. Quote Link to comment Share on other sites More sharing options...
slkslkslk Posted December 21, 2012 Author Share Posted December 21, 2012 BC547C -tranzistoarele , imi pare rau dar mai clar de atata nu reusesc ... atata poate aparatul ..., acum ma uit si la condensator, din cate vad este pus bine minus la masa si plus la plus ... Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Ai montat TOATE tranzistoarele GRESIT!!! Pune mina pe-o foaie de catalog si vezi cum sint dispuse terminalele! Quote Link to comment Share on other sites More sharing options...
zal Posted December 21, 2012 Share Posted December 21, 2012 Ai lipit trz aiurea, verifică poz terminalelor la BC547. Ai colectorul la masă, baza spre leduri şi emitorul spre divizorul de semnal cu diode, de aia se deschid ledurile. :nebunrau:Ai folosit poz terminalelor ca ptr trz japonezi şi orientali. Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 Quote Link to comment Share on other sites More sharing options...
slkslkslk Posted December 21, 2012 Author Share Posted December 21, 2012 Am inteles, ma pun acum sa verific iar tranzistori si sa ii pun cum trebuie, mersi frumos Quote Link to comment Share on other sites More sharing options...
remus68 Posted December 21, 2012 Share Posted December 21, 2012 ... se vede din satelit cum i-ai montat! Atentie la orientarea corecta a terminalelor. Quote Link to comment Share on other sites More sharing options...
zal Posted December 21, 2012 Share Posted December 21, 2012 Prima dată am crezut că a folosit 2SC945, varianta cu terminalele BCE, ei existînd şi în varianta EBC. Quote Link to comment Share on other sites More sharing options...
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