How to design a switch based on current

Discussion in 'The Projects Forum' started by MarkusL, Feb 27, 2012.

  1. MarkusL

    Thread Starter New Member

    Feb 27, 2012
    2
    0
    Hello all,

    this is my first post in the forum :)
    I am running into some problems in a solar power related project.
    I would like to switch between different types of 24VDC to 120VAC inverts depending on the DC current.
    I mean I want to use the smaller inverter below lets say 10A and the bigger above that.

    how can I design a circuit to do that?

    thanks
    Markus
     
  2. #12

    Expert

    Nov 30, 2010
    16,261
    6,768
    This would work a lot better with more information. The trick is to find a measuring point that won't interfere with proper operation and I can't seem to imagine where that is without seeing some kind of schematic drawing.

    Got a pencil and a scanner?
    How about you make a drawing in paint.exe and save it as a .PNG?
     
  3. MarkusL

    Thread Starter New Member

    Feb 27, 2012
    2
    0
    I have created a sketch - sorry, it's only hand-drawn.
    there are 2 inverters (200W and 1000W) which i want to use depending on the load.
    The reason is that the big inverter has a low efficiency on small loads.
    the switch can be a 120V/10A relay.

    [​IMG]
     
Loading...