120VAC to 5VDC?

Discussion in 'The Projects Forum' started by calvinlove0, Mar 8, 2013.

  1. calvinlove0

    Thread Starter New Member

    Mar 8, 2013
    2
    0
    Hello this is my first post so forgive me if I've posted it under the wrong category.

    I'm working on a prototype that controls a 120vac receptacle with a 5vdc PIC16F690 controlling the circuit. The trouble I'm having is finding a transformer that's small, cheap (under $20), and easy to mount. The receptacle and the PIC are all in the same enclosure so using a "wallwart" isn't really feasible.

    I came across this on item on ebay...
    http://www.ebay.ca/itm/AC-DC-CONVER...631?pt=LH_DefaultDomain_0&hash=item3efc6b86bf
    ...but it seems to good to be true.

    Has anyone ever used one of these before? How clean is the output signal?
     
  2. Kingsparks

    Member

    May 17, 2011
    118
    5
    Never used one but the manufacturer, ROHM Semiconductor is a reliable firm and I would guess it would work fine as long as the ratings are not exceeded,

    Take care.
    Roland
     
  3. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,363
    Note that the application example shows an additional eight components required.
     
    Kingsparks likes this.
  4. calvinlove0

    Thread Starter New Member

    Mar 8, 2013
    2
    0
    I talked to my teach at school and he advised me to get a 120vac to 12vac transformer, then use a bridge rectifier to convert the 12vac to 12vdc, then use a 5v voltage regulator to limit the voltage to 5VDC.

    I'm waiting on parts but got I got a chance to play around with the voltage regulator and it seems to be working, Thanks for the reply MrChips
     
  5. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
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