Why UPS output goes down when load increases

Discussion in 'General Electronics Chat' started by fayazahmedmemon, May 17, 2011.

  1. fayazahmedmemon

    Thread Starter New Member

    Jul 4, 2010
    I have made a UPS in my home but the problem is that when I am taking output from the inverter then it is 240 volt when there is no load but as I connect the load of one saver and one fan then it goes down to 130 volt and does not support any extra load without one saver and one fan.I am from pakistan and here 220 volt output is taken from main AC and inverter.I have made 750 watt UPS and Transformer is also so big to support 750 watt.Now can any one tell me that where is the problem and why the output of inverter goes down when load is connected to it and what could be the logic behind this problem.Thanks in advance
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    care to post a schematic? maybe even photos of the board, what kind of batteries are you using?
  3. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    You have a problem with your inverter.

    Without more information from you. DETAILED information. That is all we can tell you