maximum power transfer

Discussion in 'General Electronics Chat' started by electroboc, Nov 18, 2011.

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  1. electroboc

    Thread Starter New Member

    Nov 17, 2011
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    Hi guys,

    I have a question im sure many will find very simple however im struggling with a question in one of my assignments.

    I am currently working on maximum power transfer and in a purely resistive circuit the maximum power is transferred when the load resistance becomes the same as the source resistance.

    I have since added a capacitor into the circuit and the maximum power transfer falls, can any one help me with why this happens?

    Many thanks
     
  2. wmodavis

    Distinguished Member

    Oct 23, 2010
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    Can you show the circuit you are using? Are you referring to a DC or AC circuit? Since you say "...when the load resistance becomes the same as the source resistance" that leads me to the assumption you are referring to a DC circuit. Source and load 'resistance' being equal in an AC circuit does not lead to max power transfer. Got to deal with impedance in an AC circuit - right?
     
  3. electroboc

    Thread Starter New Member

    Nov 17, 2011
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    the circuit is dc as supplied by a cell
     
  4. Wendy

    Moderator

    Mar 24, 2008
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