@industral, There are several problems with your simulation schematic. 1. You have used several devices which do not have spice models assicitaed with them; 2. You have put a voltage probe onto the gate of the MOSFET but then shorted the gate net to the ground (0) net. In simulations in EasyEDA, putting a voltage probe on the ground net is not alowed; 3. To monitor the voltage across R16 you either need to ground the lower end of the transformer secondary and R16 or use a differential voltage probe. (1) and (2) are show stoppers. (3) is just a measurement problem. _First_, to get you going with simulation in EasyEDA, please read (2) and (3) in: [https://easyeda\.com/andyfierman/Welcome\_to\_EasyEDA\-31e1288f882e49e582699b8eb7fe9b1f](https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f) _Then_ have a look at: [https://easyeda.com/example/potentiometers-and-variable-resistors](https://easyeda.com/example/potentiometers-and-variable-resistors) [https://easyeda.com/andyfierman/Sweeping_a_potentiometer-3nlcM86QO](https://easyeda.com/andyfierman/Sweeping_a_potentiometer-3nlcM86QO)