facing problem in power supply

Discussion in 'The Projects Forum' started by raksha singh, Feb 23, 2011.

  1. raksha singh

    Thread Starter New Member

    Feb 14, 2011
    9
    0
    hello
    i am trying to design a voltmeter in that i am not getting how i wil convert 230v ac from the auxillary supply to 5vac .throuh that i can power my controller with 5vdc .
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
    2,517
    785
    I do not think you can power a controller with a voltmeter...

    A voltmeter is: this
     
  3. debjit625

    Well-Known Member

    Apr 17, 2010
    790
    186
    raksha singh explain it properly so that anybody can help you.

    Good Luck
     
  4. soda

    Active Member

    Dec 7, 2008
    174
    13
    Hi,
    You need a transformer to bring the voltage down to 5v

    Just remember you still need a rectifier and capacitor to change the ac volts to dc volts

    Have a look at the schematic to get the basic idea.
     
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