An ingot of material which is normally too brittle to allow successful rolling and wrought processing is formed so as to have a thickness-to-width ratio of less than about 0. The invention relates to the seeds of celery cultivar ADS-18, to the plants of celery cultivar ADS-18 and to methods for producing a celery plant by crossing the cultivar ADS-18 with itself or another celery cultivar. When starting the power controller, a microcontroller increases the conduction angle of the phase-control clipping circuit in plural steps to provide the soft start. A heat conductive molding material fills gaps in the stator winding and the space between the stator assembly and the frame. The outer wall may have a flat portion and the intake flange may have a corresponding flat portion. Thus the parameters of the electronic product can be determined by display times of the matching frames in the video file.