Mochini oa welding oa transistor (solid-state) o maqhubu a phahameng o etselitsoe mochini o otlolohileng oa ho tjheseletsa lipeipi tsa tšepe. Mojule o entsoe ka lisebelisoa tse matla tsa MOS e etsa karolo ea oscillation, 'me motlakase oa capacitor bank C, coil inductor L le potoloho e ts'epahalang ea taolo ea ts'ireletso e etsa mofuta oa hona joale o fetohelang.