A universal AC-line input light emitting diode drive includes a rectifier, at least one LED connected to one output of the rectifier, a controllable element in series with the at least one LED, and a circuit for turning off the controllable element when the line voltage exceeds a reference voltage. A magnet is coupled to one mass and a nonferrous metallic member is coupled to another mass that moves relative to the first mass. A buried insulating pattern is disposed in the opening. The invention may also be embodied as a machine having an input device, a database, a processor and executable instructions. In particular, a bone growth promoting agent is selectively applied to spinal implants, spinal plugs, spinal wedges and other implantable devices.