Power Supply for Nightlight

Discussion in 'The Projects Forum' started by jimbobanderson, Oct 11, 2008.

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  1. jimbobanderson

    Thread Starter New Member

    Oct 11, 2008
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    I am looking for a practial, simple power supply circuit for an LED nightlight. The nightlight will plug into a standard 110VAC outlet and only requires 5VDC at 200mA. I am trying to avoid using a transformer because of the size/cost ... and I have seen other LED nightlights with simple looking circuits, I just can't figgure out the design. Any help much appreciated.
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    Well, you can do it without a transformer but it will be most complicated by using a buck converter. The simplest way to do it is with a transformer, which will be relatively small because the power you need is small.
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,648
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    Hello,

    Take a look at the PDF included.
    This is designed to have 20 mA to go through the leds.

    Greetings,
    Bertus
     
    Last edited by a moderator: Oct 11, 2008
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Always use a transformer when powering anything from the line. Any component failures may present a lethal shock hazard.

    Policy here is to discourage any such circuitry.
     
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