1 power source, 2 devices

Discussion in 'The Projects Forum' started by dblapitan, Sep 9, 2015.

  1. dblapitan

    Thread Starter New Member

    Jul 29, 2015
    2
    0
    I got two devices, the 1st device needs 12vdc and the 2nd device need 12vdc 1.5A.

    Is it ok to use 1 power source that outputs 12vdc 1.5A for both devices?
     
  2. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    1.5A plus (something) is greater than 1.5 A
    so, no.
     
  3. dblapitan

    Thread Starter New Member

    Jul 29, 2015
    2
    0
    Does that mean different power source for each device? thanks a lot
     
  4. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    It means that you can't get more than 1.5 amps from a 1.5 amp power supply.
     
  5. TheButtonThief

    Active Member

    Feb 26, 2011
    219
    38
    How much current does the first device need?
     
  6. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,798
    1,103
    Are you asking is it ok to run both devices at the same time from the one supply? If so, the answer is 'no'.
     
  7. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    2,805
    833
    How much current does the other device need? Your power supply needs to be able to source current greater than the SUM of the current required by the. Two devices.
    For example, say the first device requires 500mA. Then, the supply must be rated for greater than 2A. That is 1.5 A plus 0.5A (500mA).
     
  8. ScottWang

    Moderator

    Aug 23, 2012
    4,854
    767
    No tech words, the current of power supply as the money in your pocket, the drawing current of device as the cost of stuffs that you want to buy, do you have the idea now?
     
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