This circuit is based on the one found here. http://www.i4at.org/lib2/inverter.htm I had to mod it a bit to get it to work in this simulator. I have not bench tested this circuit but will do in the next few days. Again note to all new comers to Everycircuit. If you click “in Chrome” or tap “in app” on a user names you will see their profile and a list of their public circuits for viewing.