Guru
Joined: 07/11/2007
Location: AustraliaPosts: 1904
| Posted: 10:14pm 25 Mar 2017 |
Gary, your comment about adding capacitors caused the mosfets fail is strange. Perhaps your capacitors are suspect?
While I was testing with my 4 mosfet rig and a 3 speed desk fan on full power as load, I could observe little spikes near the crossover point. Adding a 10,000uF capacitor completely removed those spikes.
Another thought, on the EG002 schematic they show interlocking transistors between the 8010 and gate drivers. They put them there for a reason I assume. Worthwhile to test this?
Everything is on hold here, still waiting for toner transfer paper so I can make a different PCB for my inverter mosfets.
Klaus