How to Wire SPDT switch for two power sources and one load

Discussion in 'The Projects Forum' started by scotprice, Jun 17, 2014.

  1. scotprice

    Thread Starter New Member

    Jun 13, 2014
    16
    0
    I am looking to run a lepai 202o t-path amp from a 12v battery, but also be able to switch it to use with plugged in wall wart.

    How do I go about wiring a spdt switch to use two power sources for one load. I can only find information on how to switch between two loads and one power source. I have attached a schematic of what I am trying to do, but when I wired it up, nothing happened.

    [​IMG]
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,061
    3,831
    This circuit is kink of a mess.

    You need a resistor in series with your LED

    You need to double check the data sheet on your voltage regulator - usually need them in series (or a resistor if they are shunt (parallel) regulators).

    Also, if you are fairly "green" building circuits, post a photo of your breadboard too, there are lots of wiring errors at that level too.
    Good luck.

    [​IMG]
     
  3. scotprice

    Thread Starter New Member

    Jun 13, 2014
    16
    0
    Im not using a breadboard. This is all just wires hooked up to each other. The LED is part of the switch (ie. when turned on LED lights up). I couldnt find a schematic symbol for it.
     
Loading...