Methods, systems and apparatuses for operating a converter or other circuits are disclosed. A doped dielectric layer is formed on a substrate. More particularly, the improved surgical needles can be manufactured with two or more different coatings that provide the surgical needles with both durability and lubricity for ease of repeated and successive passes through tissue. The pocket light has a push button power switch that can be activated by the user through the fabric of their shirt. This glowing light creates unique artistic light patterns, flashing sequences, and glowing designs throughout the interior and exterior of the board. To maintain accuracy, cross track hold is alternated with clock hold to update the cross track estimate when changes in vehicle direction are detected or when a predetermined period has elapsed.