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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I think this one should be a piece of cake for you guys
Let's say you have series RL circuit, connected to a constant voltage constant frequency AC voltage source. The inductor is characterised by its inductive reactance, Xl. The resistor is variable. The question is, at which value of the resistor relative to Xl, will be the dissipated power on the resistor the highest?
Registered Member #2040
Joined: Fri Mar 20 2009, 10:13PM
Location: Fairfax VA
Posts: 180
I'd say the point when R equals Xl. To get the maximum amount of power transfer from source to load you want the load impedance to be the complex conjugate of the source impedance. If that isn't possible, as in this case, you want the magnitudes of the impedances to be matched.
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Hopefully I know what I am doing, so this might be a help, ill ship you the spreadsheet if its what you need, had the time on my hands and felt like it :D
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RL circuit help
