Electrical Resonance

  • Thread starter jayjay112
  • Start date
  • #1
jayjay112
36
0
Explain the meaning of the term resonance as applied to a series A.C circut.



What is the best way of answering this question. I am kind of confused on what to include in the definition and what not to include.



We know that the capacitive reactance and the inductive reactance depend on frequency. The value of frequency when w = 1/(sqaureroot of LC) = 2.pi.f0

The frequency f0 is called the resonance frequency of the circuit. At this frequency the impedance is smallest. At this frequency the circuit is said to be at resonance. At resonance the current is in phase with the generator voltage.

Is this an ok answer or is their a better one i could use? Also can anyone find a link to the phasor diagram to illustrate this??

Thank you.
 

Answers and Replies

  • #2
jayjay112
36
0
Or is this a better definition...

Resonance in AC circuits implies a special frequency determined by the values of the resistance , capacitance , and inductance . For series resonance the condition of resonance is straightforward and it is characterized by minimum impedance and zero phase.
 
  • #3
jayjay112
36
0
can anyone find a link to the phasor diagram to illustrate this??
 
  • #4
berkeman
Mentor
63,646
14,764
Or is this a better definition...

Resonance in AC circuits implies a special frequency determined by the values of the resistance , capacitance , and inductance . For series resonance the condition of resonance is straightforward and it is characterized by minimum impedance and zero phase.

I think that's a better one. And I'm not sure that a phasor diagram will be of much help.

BTW, the resistance isn't a factor in the resonance per se. It's a damping factor that causes a resonance to diminish over time, if it is not being actively driven.

You might google "tank circuit" for more ideas on resonance. Also look into how the energy in an LC resonant circuit oscillates back and forth between _____ and _____ ...
 

Suggested for: Electrical Resonance

  • Last Post
Replies
16
Views
472
Replies
1
Views
551
Replies
8
Views
658
Replies
12
Views
367
  • Last Post
Replies
1
Views
657
Replies
17
Views
698
Replies
4
Views
357
Replies
7
Views
373
Replies
3
Views
757
  • Last Post
Replies
1
Views
1K
Top