difference between the two Resonant circuits

[hayowazzup]

Hi all,

I was wondering when we would use the circuit with the resistor and when to use the one with capacitor.

 

[crutschow]

The one with the resistor will exhibit a damped oscillation, and the one with the capacitor has no damping. As to when you use one or the other, that depends upon what you are trying to accomplish with the circuit. You tell me. :???:

 

[Ratch]

hayowazzup,

I was wondering when we would use the circuit with the resistor and when to use the one with capacitor.

In the first place, neither of those circuits is resonant at 1000 Hz. You would have to crank up the frequency to 50329 for that to happen. Neither of those circuits will decay because they are driven by a voltage source. The impedance of the first circuit at 1000 Hz is R+0.0629j, and the second circuit is -15.8526j . You will have to decide where to use them.

Ratch

 

[rohitkhanna]

Use the 2nd one if you don't want source voltages DC riding on the tank circuit.