Jump to content
ELFORUM - Forumul electronistilor

ajutor, schema alimentare 50 led-uri

Recommended Posts

am un acvariu mic, care vreau sa-l luminez cu niste led-uri piranha. mi-am comandat 35 albe, 10 rosii si 18 albastre.

cele rosii sunt cu 4 chipuri si la 2.5 V cer 80mA(maxim cica), cele albe si albastre sunt cu o singura dioda la 3.2V cer 20mA. am un alimentator de 24 V 2 A (sau 1A numai stiu sigur) si as fi vrut sa-l folosesc.

am cautat am gasit acest site http://led.linear1.org/led.wiz si acolo imi spune in felul urmator:

pot sa-mi fac o matrita de 6 ledu-uri x 3 randuri(pentru cele albastre) -

la fiecare rand bag la sfarsit un rezistor de 120ohm(1/4W)


cele rosii rezulte 1 rand de 9 leduri cu un rezistor de 22ohm(1/4W)


cele albe 5 randuri a cate 7 led-uri - si cate un rezistor de 82ohm(1/4W).


intrebarea mea este, pot sa conectez toate astea in paralel la acest alimentator?

teoretic(dupa cum scrie pe site)consumul ar fi: 240 mA. este corect???


multumesc anticipat


L.E. - as putea sa folosesc termistoare ca sa limitez curentul in cazul in care se incinge mai mult???cum aleg termistorul?

Link to comment
  • Replies 0
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

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.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  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