powering 2 modules with single output PSU

Discussion in 'The Projects Forum' started by wasabi, Jun 5, 2012.

  1. wasabi

    Thread Starter New Member

    Jun 5, 2012
    2
    0
    Hi guys

    im new to electronics and still at a sub basic level, i wanted to ask for sound advice before hand

    i have a single output switching PSU with an output of 15vdc 3a to power my project

    the 2 modules im using both require 15v and both need around 0.5a

    how do i connect both on the same power supply?

    i have looked at similar projects using a toroidal psu coupled with a bridge rec and large smoothing capacitor but i was told by a friend i can not use a smoothing cap with DC, only AC then rectify it?

    some ideas / solution would be great

    i can build basic circuits from scematics so a reg/splitter so open to anything


    thanks
     
  2. mcasale

    Member

    Jul 18, 2011
    210
    12
    I'm not sure what "modules" you refer to. You said the switching supply provides 15VDC at 3 amps. Just connect this directly (in parallel) to each module.

    What is the output from the "toroidal" power supply - DC or AC?

    Depending on what you're trying to do, you can put capacitors on AC or DC.

    If you're trying to make a DC supply from an AC supply (like a transformer), you'll need to rectify and then filter with a capacitor. Google "full-wave rectifier".
     
  3. wayneh

    Expert

    Sep 9, 2010
    12,087
    3,027
    +1 Assuming the AC versus DC issue is resolved, just think of your modules as light bulbs being plugged into an outlet. Parallel loads on a single supply.
     
  4. wasabi

    Thread Starter New Member

    Jun 5, 2012
    2
    0
    my psu is DC.

    i will connect them in parralel


    thanks for the advice
     
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