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Resonans Serie- og Parallelkreds - oz1lcg

Resonans Serie- og Parallelkreds - oz1lcg

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Zres, r, godhed <strong>og</strong> båndbrede findes ved:<br />

Xc<br />

Zres = r = =<br />

Q<br />

Xl<br />

Q<br />

( ) 2<br />

Xl Xc<br />

Zserie = r + −<br />

Ugen<br />

r =<br />

Igen<br />

Xl Xc R fres<br />

Q = = = = =<br />

r r Xc b<br />

b =<br />

f<br />

Q<br />

res<br />

Uc<br />

Ugen<br />

<strong>Serie</strong>kredsens impedans er kapacitiv under resonans, induktiv over resonans <strong>og</strong><br />

ohmsk på resonansfrekvensen.<br />

Igen <strong>og</strong> eff.<br />

igen = il = ic =<br />

p = i ∗r<br />

2<br />

Uc<br />

Xc

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