Driver unit + transformer?

Discussion in 'General Electronics Chat' started by roadey_carl, Apr 29, 2010.

  1. roadey_carl

    Thread Starter Active Member

    Jun 5, 2009
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    5
    Whats the diffrence between a driver unit and a transformer? why cant you use a 12v transformer on LED's but you can use a driver unit on them? Has it got somthing to do with a driver unit having a constant voltage and current output and transformer needing a minimum load for it to have a secondary output?? I dunno!! :confused:
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    A transformer will deliver an AC voltage.
    A led driver unit will deliver a constant current for the power led as a led ia a current driven element.
    The currents will be different for the different leds.
    Always take a look in the led datasheet for the correct driving current.

    Bertus
     
  3. roadey_carl

    Thread Starter Active Member

    Jun 5, 2009
    116
    5
    So if I had a 12v transformer, no matter how small the load was, it should still power it? ( its not LED's I was just using that as an example)
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,648
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    roadey_carl likes this.
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