Folks,
I'm trying to do some simplified simulation of a resonant conveter that used for CCFL. Got some results that seem to be reasonable. I've attached the simulation results here. There's one thing that I don't understand on this simulation(using LtSpice). If I used a PWL as source to create a pulsethe oscillation(resonant) frequency look correct. However, If I use a DC source and voltage control switch to create pulse then oscillation(resonant) frequency is quite lower than expected.
Anyone see a reason why it's like that.
TIA,