Switching a High Power & Low Power Load Together??

Discussion in 'General Electronics Chat' started by joe426, Jan 28, 2012.

  1. joe426

    Thread Starter Active Member

    Aug 11, 2009
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    I have a PCB which is powered by 5v @ 1A and a motor pack which is powered by 50v @ 25A. Is it a good idea to switch these both "on" at the same time using a DPST switch such as this one? Or would there be a LOT of noise? Thanks!
     
    Last edited: Jan 28, 2012
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    488
    It is possible to switch both supplies with one switch. If it can cause any problems depends on your application and layout/wiring.
     
  3. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    1,571
    230
    generally not a good idea to combining sources. Your PCB will be sorrily messed up if there's a short at the switch. Your switch may be more than adequate, but in the practical world, shorts often happen due to improper strain relief, poor connections, etc.
     
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