I have put this design in every circuit more times than I can count and I keep forgetting to save. I bought it at Harbor Freight. The Transformer has six taps. The diode on the left doesn't exist and is there to represent the center tap. Right side ends in a 3 wire 3 mesh screen. I wasn't sure what to use to represent it so I just used switches.
I am saving before it's working or finished Because I keep forgetting and then have to start over.