I'm trying to build a ZVS driver for a high voltage pulse circuit, but I'm first trying to perfect the driver. My question is, how do I know if my ZVS driver is working properly? I don't think mine is oscillating. I've attached my circuit. The question is are both lamps suppose to light up in this example? Because when I put lamps on my ZVS only one lamp lights up as shown in the other attachment. Is this correct? I would assume the ZVS is suppose to oscillate back and forth and therefore both lamps would be on. I'm confused.