Thanks all, I get it, PWM DC + Cap as DC filter = full-wave AC
What if I took a PIC MCU which has the ability to sink in the low state and set pin 1 and pin 2 to alternate pulses (1 high & 2 low then 2 high & 1 low) and ran a wire loop between the pins with a Cap in series, would that make a full-wave square-wave AC or a sine-wave because of the Cap? Would there be any benefit/difference to creating AC this way as opposed to a single PWM DC source with cap to ground?