Quote Originally Posted by mikeh View Post
As Far As I Know A Full Bridge Is Sine Wave Less Is Mod. Square Wave
Maybe Some Trick Components.
Or Using The One Ccp To Gen. Freq. Like You Can Do With A 555
These PCBs are using a full H- Bridge , and the output is a pure sinewave . I have seen the output in an oscilloscope. Four pins of the PIC are being used to drive the mosfets.