$ 0 0 Here are the modifications: AutoControlledTractorWithMosFet_schem_02.png1205x732 45.2 KB I can't find any fault in this circuit.Still, I can't simulate it athttps://circuits.io/circuits/4017693-ea-motor-sebessegenek-vezerlese-vellenallassal-es-szrttvelWhy?