I've been conducting some test on pwm's on a test generator. One thing that I would like do do is get it to oscillate ( resonate ). There is something I want to share with you on these pwm's. Because they were made to operate DC motors an anti chatter diode is install on each pwm. If you look at schematics you see them used all the time on relays and motors to prevent reverse current flow. That could make the relay re-energize or the motor try to go backwards. I don't think we need it on HHO generators but it would be a good idea to take the diodes out of the pwm's and install them reversed bias on the HHO power relays primarys. Now reversed biased would be the same as there installed in the pwm's. The line side to the positive voltage. In the MX067 that diode is called D1 I believe it has the same name on ZFF pwm.
Attachment 1043