A motor controller for regulating the speed and limiting the input current to a dc motor is disclosed. A method for measuring temperature of a device using a comparator and converting the bitstream of the comparator to a digital output is also given. The method also includes irradiating the inner wall of a blood vessel around an aneurysm or vascular defect with various forms of energy to delay or halt aneurysm or vascular defect formation. The cap portion rotates relative to the base portion about the hinged connection between a closed position in which the cap portion covers the dispensing aperture and an open position in which the cap portion uncovers the dispensing aperture. The method requires only one pattern level and it eliminates pattern overlay as it also simplifies the processes to form different silicide material over different devices.