Well its all voodoo to me, I understand what the components are and what hey do, i can even build my own circuits, some even quite complex, but this liettle thing is beyond me. Im not sure what the processes are on this board or how it acheives them.

All i know is you connect the mains to it, a motor to it, a huge transformer(choke) to it and a 0-10vdc feed to control the motor speed.

And this critter Click image for larger version.  Name: cap.jpg  Views: 929  Size: 36.0 KB  ID: 6599 decided to show the world its insides, anouncing the event with a bang, as it let out its magic smoke..

It was sitting across the pins onf what i believe to be a transformer, or a choke as Irving has suggested, i will see if i can get a picture as you have suggested of the board posted.

Rick