An excitation circuit for a flux switching motor. These devices may include conventional television displays, personal computers, and other conventional audio and video equipment. The R-2R ladder network receives first and second reference voltage terminals and generates an analog voltage at an output terminal in response to a digital input code. , is applied to the surface of the steel tube or the aluminum rib, and then a fluxing agent in the form of cesium-aluminum tetrafluoride is applied between the steel tube and the aluminum rib at room temperature before or during the mechanical contact of the aluminum rib with the steel tube. The hydraulic actuator adjusts the valve lash during one or more rest periods.