Q is the quality factor of series resonant circuits

AI Thread Summary
The quality factor (Q) of series resonant circuits is expressed as Q = wL/R, while for parallel resonant circuits, it is Q = R/wL, which can be confusing. The distinction arises from how energy is stored and dissipated in each type of circuit. Loaded resonant circuits include additional components that affect their Q factor, while unloaded circuits do not have these extra elements. To find the Q factor of a loaded resonant circuit, one must consider the effects of the load on the circuit's resistance and reactance. Understanding these concepts is crucial for analyzing circuit performance.
ng
Messages
31
Reaction score
0
Hi all

I read that Q,the quality factor of series resonant circuits is wL/R
------------>1/R sqrt(L/C).This i understand

1.but for parallel resonant it is R/wL...hmm but why is that?this i don quite get.

2.Then what do u mean by loaded resonant circuit and unloaded resonant circuit?

I hope to hear from u guys.
Thanx for ur time and help.
ng
 
Engineering news on Phys.org
Q is defined as the quotient of center frequency over bandwidth. From this definition follow the different formulas for parallel and series circuits.
 
i am sorry to be a dumbo but i wish u spelled it out. :redface:
 
Can someone tell me how to find the Quality factor of a loaded resonant circuit?

PLEASEEEEEEEEEEthanks a lot.
 

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
View full post »
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Similar threads

About the definition of resonance frequency
Replies
40
Views
5K
Discrepancy in calculating Q Factor using Energy instead of R/wL
Replies
14
Views
2K
Q-Factor in Series-Parallel Shunt Circuits
Replies
6
Views
2K
Can Resonant Frequency Disassociate Water Molecules?
Replies
12
Views
3K
Help with understanding of RF theory-Kinetic inductance parametric amp
Replies
1
Views
2K
Finding the resonant frequency of this "discriminator" demod circuit.
Replies
2
Views
2K
Explicit Calculation of Q Factor of Loaded Tuned Circuits
Replies
9
Views
2K
Induction heater with high Q factor
Replies
8
Views
1K
About the Quality factor
Replies
9
Views
3K
Series Coupling Capacitor as Impedance Inverter of Resonator
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top