Jump to content
ELFORUM - Forumul electronistilor

O schema f.simpla de VU-Metre analogice

Recommended Posts

Salutare colegi forumisti.Dupa cum spune si titlul as dori daca se poate o schema f.simpla de vu-metre analogice.Inainte de a posta am cautat pe aici dar cea mai simpla schema era cu un tranzistor si componentele aferented.Eu as dori ceva cat mai simplu cu ceva rezistente si cateva diode care cred ca se vor pune la instrument.Rezistenta interna a celor doua vu-metre este de 1247ohm si 1256ohm.

Link to comment
Share on other sites

Nu e nici o problema ! La incercari vei incepe cu semireglabilul dat spre rezistenta maxima si vei regla in asa fel ca atunci cind amplificatorul elibereaza maximul de putere fara distorsiuni (deci NU puterea maxima eliberata) VU-metrele sa indice "0db".

Link to comment
Share on other sites

Tinind cont ca aplici semnal de la iesirea de difuzor nu prea conteaza. Diodele cu germaniu (seria EFD, seria OA) au o cadere de tensiune de aproximativ 0,25V iar cele cu siliciu de aproximativ 0,6V. Eventual pune ceva diode in comutatie (1N4148); daca nu, poti pune linistit chiar 1N-uri.

Link to comment
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.

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.

  • 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.Terms of Use si Guidelines