Connect with us

Two power supplies, switched by loss of one

Discussion in 'General Electronics Discussion' started by mike sessi, Nov 5, 2016.

Scroll to continue with content
  1. mike sessi

    mike sessi

    9
    0
    Feb 20, 2016
    Looking for, how to build, locate, create a solution
    The problem:
    I have many systems that need 12vdc at 6a.
    When the PS fails, someone needs to drive to this locate and swap out the PS, this could take a day or more

    The idea:
    Monitoring the PS(A) 12vdc out. If the 12v goes beyond threshold
    ..the relay turns off power to PS(A) turns on PS(B)
    Maybe a timer, wait 5 minutes before switching to PS(B)
    USB sends a "1" ( or stops sending a '0')

    Problem, when PS(A) fails, there is no power, other than 110vac
    Use a battery or capacitor to power the circuit ?
    When PS(B) is powered, 12v and/or USB 5v is available

    The system will notify that PC(A) not working....be replaced when convenience.

    Thanks
     
    Last edited by a moderator: Nov 6, 2016
  2. Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    Why does the PSU fail? Fix that and that will save you time and money wont it.?
    Adam
     
  3. Bluejets

    Bluejets

    4,598
    975
    Oct 5, 2014
  4. mike sessi

    mike sessi

    9
    0
    Feb 20, 2016
    The P.S. has a life span of 3-5 years. These are off the shelve 12v/6A supplies.
    Yes, a better supply would last longer, and this is what they use. Yet, An IP power switch (110v) could work ....off the shelve item
     
  5. mike sessi

    mike sessi

    9
    0
    Feb 20, 2016
    Idea...see image
     

    Attached Files:

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

-