Jump to content
ELFORUM - Forumul Electronistilor
Sign in to follow this  
MadRaper

Am nevoie de un amplificator pt piezo

Recommended Posts

Dupa cum spune si titlul am nevoie de un mini amplificator pentru un difuzor piezo, care sa lucreze undeva pe la 1.5-3volti, cat mai mic posibil (smd) gasesc asa ceva pe la noi? daca da... unde si cam cat costa?Posibil sa gasesc si prin telefoanele mobile vre-un circ de asta?

Share this post


Link to post
Share on other sites

Difuzorul piezo capacitiv are nevoie prin definitie de tensiune mare de excitare (cca 15-45V). Daca aplicatia este liniara (adica e musai sa fie sinus pe difuzor) solutia cea mai simpla este un transformator ridicator atacat dintr-un amplificator audio..Daca e vorba de un sunici banal care are menirea de a face zgomot merge orice fel de unda dreptunghiulara in jurul frecventei de rezonanta a difuzorului (un astabil gen 555 sau iesire de microcontroler cu atac prin trafo ridicator sau prin bobina).

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.