A constrained data-adaptive signal rejector suppresses signals received through the side lobes of a sensor array while preserving signals received through the main lobes. The programmable motor drive comprises a plurality of H-bridge circuits and the programmable motor drive is programmable to cause any two or more H-bridge circuits to be operated in parallel. The contact is formed by reaction between the metals and the semiconductor, and thus the in-situ simultaneous formation of metal silicide and carbide suppress the release of excess carbon at the contact interface. Such ink can be configured as an ink-jet ink. A storage capacitor is coupled to the first source through an isolating resistor. The perimeter wall has a first section, a second section, and a third section.