A method and a device for canceling an offset voltage in an output of a comparator circuit include applying a signal to a first input of the comparator as a function of an initial tap point in a resistor ladder. In one embodiment, the chocolate fountain includes a heating element encased in an aluminum enclosure. One or more external links are coupled to each fabric router allowing the routing of packets between external links by traversing one or more hops across the fabric links. The source magnetron is smaller, stronger, and unbalanced source magnetron and is positioned near the edge of the wafer in sputter deposition and etching. In addition, the centerline along the lengths of the first and second segments resides in a same plane. When the first magnet member and the second magnet member slidingly move in synchronization or when the yoke slidingly moves, the direction of a magnetic flux flowing in the yoke changes to generate an electromotive force in the induction coil.