Adapt a basic 9V powerbank to make possible flow-through charging

Discussion in 'Power Electronics' started by Caros M, Sep 26, 2016.

  1. Caros M

    Thread Starter New Member

    Aug 29, 2016
    12
    0
    Hello,
    I have a 9V powerbank, and could adapt or find an usb to dc connector (round one) to have this powerbank input passing through a +/- connector that i could connect to some DIY box.

    I would like this DIY box do this :

    -If electricity coming from input 1 current (normal plug to 220/110VAC), power device with it.
    -if no electricity coming from input 1 current, instantly (could be the problem, no power cut more than 1sec should be done, if possible none..), take current from second input, my 9V powerbank.

    I don't know in circuit. At least what a capacitor does, that a diode protect from reverse polarity, a fuse burn and protect from overheating..
     
  2. Caros M

    Thread Starter New Member

    Aug 29, 2016
    12
    0
    somebody can help?
     
  3. #12

    Expert

    Nov 30, 2010
    16,346
    6,831
    It depends on what
    means. If it's a higher voltage, you can do this with just a diode.
    You left out so much information nobody wants to guess the voltages, the currents, the DIY box, or drag it out of you one question at a time. Give the information or nobody will guess at what you want.
     
  4. Caros M

    Thread Starter New Member

    Aug 29, 2016
    12
    0
    INPUT 1 : DC 9V (Battery)
    INPUT 2 : DC 9V (power adapter)

    If input 2 no current, directly switch on battery.

    I want something with input 1 and input 2 to output 9V-DC.
     
  5. Caros M

    Thread Starter New Member

    Aug 29, 2016
    12
    0
    still looking for a solution. hope you can help guys.
     
    Last edited: Oct 3, 2016
Loading...