Hi

Using LTspice, I noticed with a LC tank circuit pulsed by an AC that at the resonance frequency there is a phase shift from 90° to 270°.

Is that correct? And if so, why the sudden shift and not gradual?

Many thx

 

because the xC = xL at resonance. the phase shift is opposite for the l and the c, at any other frequency, they arent.

 

because the xC = xL at resonance. the phase shift is opposite for the l and the c, at any other frequency, they arent.

Is this phase shift between the peaks of the current at each of the components (inductor and capacitor)?

 

http://www.allaboutcircuits.com/vol_2/chpt_6/1.html

explains the phase shift between the capacitor volt and the inductor current.

Is the phase degree jump from 90 to 270 in LTspiace at resonance indicative of the the phase between the capacitor volt and inductor current for this circuit?