Jump to content
Sign in to follow this  
pereman

Circuit de protectie a intrarilor microcontroler

Recommended Posts

Salutare la toti.

As vria ceva pareri, sfaturi pentru protecti SIGURE a intrarilor microcontrolerului (AVR ATmega). Am tot cautat pe internet, manuale despre metode de protectie a intrarilor in cazul cind acestea au lungimi mari si interactioneaza cu utilaje industriale, insa as dori sa aflu si parerea celor experimentati in acest domeniu (sunt incepator).

Atasez mai jos solutia la care eu am ajuns inspirinduma din alte surse. As vria pareri referitor la schme.

 

    * SC1, ST1 - vor fi intrari de pe care voi citi prezenta/absenta tensiunii 24V

    * INC1K1, INC2K2 - intrari de la un contact (normal deschis)

 

Multumesc.

post-5050-0-36739300-1421176098_thumb.jpg

Share this post


Link to post
Share on other sites

O interfata cu "un buffer cu AO" reprezinta una dintre cele mai bune solutii pentru protectia unui MCU, bineinteles AO-ul fiind la randu-i protejat pe intrare cu o dioda Zener sau, de ce nu, cu un SMBJ15CA. Este mult mai sigur asa. In plus, solutia merge implementata in problema descrisa mai sus.

Share this post


Link to post
Share on other sites

Mam gindit la asta. Insa eu am multe intrari peste 20 de intrari de acest tip, mi se pare incarcata schema, plus ca mai am si alte blocuri.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We use cookies and related technologies to improve your experience on this website to give you personalized content and ads, and to analyze the traffic and audience of your website. Before continuing to browse www.tehnium-azi.ro, please agree to: Terms of Use.