Al, I agree it's a bit strange, I can't see a reason for the ringing at about 5V on the gates, The transitions are quite evident and are the cause of the ringing. I will try what you suggest as follows;- If I take the 60V PP (30V pos)signal on the drains then seeing as I have 8K2 gate to deck then 18K in series with the 47nF and no zener ??
Mike
Mike
