Connect with us

UC3825A based smps troubleshoot

Discussion in 'Power Electronics' started by aksnis, Oct 6, 2020.

Scroll to continue with content
  1. aksnis


    Oct 6, 2020

    I am trying to repair a smps power supply based on UC3825A

    Problem is the resistor R49 & R34 get burst as soon as i start the smps

    I am not able to find out the issue

    SYS_ECON is a 0-5v given from MCU desired by user to control 0-180v smps output

    Attached Files:

  2. Bluejets


    Oct 5, 2014
    Have you checked the value of R35 ..?
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day