It's a regulated supply so you can't expect a 50% duty cycle square wave. Looking at the gate legs will show a reduced duty cycle square wave.
If post 18 is the drain, do you see less ringing if you ground the scope to the source leg of the FET being probed?
If post 18 is the drain, do you see less ringing if you ground the scope to the source leg of the FET being probed?
Yes. Almost all the ringing was gone after I added the rectifiers actually.
Thanks for everything Perry.
Thanks for everything Perry.
I'm not sure I understand. Did you check the drain with no rectifiers (or with the 12v supply so low the amp would go to 50%) with the scope grounded to the source terminal of the FET?
The ringing could be either too little deadtime or a bad snubber.
Don't pull the rectifiers to check but you might try reducing the 12v.
The ringing could be either too little deadtime or a bad snubber.
Don't pull the rectifiers to check but you might try reducing the 12v.
Looks like I'm going to have to get this inductor fixed up first. Was holding it twisted trying to get a picture for you and she sent sparks flying from the inductor.
Initially when the ringing was there I had the probe ground on the neg terminal of the amp. And the probe on the drain with no inductors. After I added the inductors I checked again. It was gone. But that was still at the 13v. I'll do as asked soon as I get this inductor out and fixed.
