240vac to 12vdc

Discussion in 'General Electronics Chat' started by miskin, Apr 7, 2009.

  1. miskin

    Thread Starter New Member

    Apr 3, 2009
    1
    0
    i need a transformer to give me 240v ac to 12vdc it has to control a Maglock for a house door. Would it be possible to use a simple car battery charger i dont realy want rise voltage above 12vdc. How hard is it to build or adapt a charger. Or is it best to go to Maplins and get an off the shelf unit
    :confused:
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    A transformer won't do this by itslef - you'll need a rectifier as well and possibly a voltage regulator.

    A car battery charger puts out more than 12V.

    If you have an interest in learning electronics, we will of course help you build or modify a device to your specific needs. Depending on your interest level and urgency, you might be happiest spending money on a pre-made unit.
     
  3. b.shahvir

    Active Member

    Jan 6, 2009
    444
    0
    Not only the voltage but the current rating of the Xmer (amps sourced by it) should also match your desired application or else it could lead to abnormal conditions :eek:
     
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