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

 

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?

 

the circuit is dc as supplied by a cell

 

Is this the same question as in this thread?

http://forum.allaboutcircuits.com/showthread.php?t=62461

One thread is enough. Pick this up in the other thread please.