need a power supply

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Discussion in 'General Electronics Chat' started by astatin, Feb 24, 2008.

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  1. Feb 24, 2008 #1
    astatin

    Thread Starter New Member

    Feb 24, 2008
    1
    0
    Hi there,

    I need a power supply that runs two 5V and 160mA relay. Its efficiency must be %70-80. It is not important that it is smps or capacitive. It is my homework and i was said that this is for avert spending too much power when the tv or pc is off. Can you help me cause i can not find anything form net. Thanks.
     
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  2. Feb 24, 2008 #2
    hgmjr

    Moderator

    Jan 28, 2005
    9,030
    215
    #2 Reply
  3. Feb 27, 2008 #3
    pradeeba

    Active Member

    Feb 27, 2008
    104
    0
    can u give detailed specification about the power supply?
     
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  4. Feb 29, 2008 #4
    cumesoftware

    Senior Member

    Apr 27, 2007
    1,330
    14
    A wall-wart is not well regulated and might not have an efficiency of 80%.

    I don't know why the requirement of a that high efficiency, when your application only requires an output power of 1.2W?
     
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