Jump to content
ELFORUM - Forumul Electronistilor
Sign in to follow this  
Guest SyNcRoN_the second

lamuriti un nepriceput

Recommended Posts

Guest SyNcRoN_the second

am mai multi 2n3055 pe acasa si 2 trafuri (din surse de tensiune de acelea de labolator ,c u care faceau astia electroliza in clasa a 7 a ) trafurile , printre alte mediane, au si una care imparte in 2 X 13,8 c.a. , la vreo 5 amperi.imi poate spune cineva daca pot face un amplificator ( daca da, la ce putere si ce distorsiuni)cu ceea ce am enumerat mai sus ?

Share this post


Link to post
Share on other sites

Cu tensiunea data de transformatoare asa cum sunt ele acum (2 x13 v)nu poti obtine mai mai mult de 25-30w/4ohmi. Daca insa le-ai rebobina la puterea traf-urilor poti scoate usor 100w (sau 2x50 sau 4 x 25 w cum te intereseaza ) pe 4 ohmi.Traf-uri de alea am avut si eu intr-o statie facuta de mine si trebuie sa precizez ca la mine se cam incalzeau chiar si in gol . Solutia adoptata .... recalculat cum trebuie numarul de spire din primar (si automat si din secundar) si in consecinta am mai bagat cam 100 spire in primar si nu s-a mai incalzit asa de tare. Asa ca o impresie personala , mi se par de slaba calitate traf-urile alea .

Share this post


Link to post
Share on other sites

Daca ai 2 trafuri poti face tensiune dubla, folosind cate un transformator pt. fiecare ramura a alimentarii.Daca ai de exemplu 2x13.8V pe un transformator, asta inseamna 27.4V pe aceste infasurari in serie. 2 transformatoare = 2x27.4V , asta dupa redresare inseamna 37V in gol, cam 34V in sarcina si poti face un amplificator care sa aiba 60-80W.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.