Abstract: In some examples, apparatus comprises a multiplexer (MUX) adapted to be coupled to a set of battery cells and configured to provide a voltage of a different battery cell in the set of battery cells based on a MUX control signal. Apparatus comprises a comparator coupled to the MUX and configured to compare a MUX output signal to a threshold voltage to provide a comparator output signal. Apparatus comprises a digital control circuit configured to provide the MUX control signal to the MUX, to store the comparator output signal, and to use a logic AND gate to provide an AND gate output signal based on the stored comparator output signal.

Abstract: A method for forming extruded microtube devices and products having a hollow portion utilizing a hydrodynamic nozzle, a curable fluid, and a core fluid to form flexible polymer based microtubes having an inner diameter ranging from 500 nanometers to 500 micrometers and also continuous microtubes having a varying inner diameter ranging from about 500 nanometers to 500 micrometers. The outer diameter can be variable and have a cross-sectional shape that is circular, rectangular, square, triangular, elliptical, star, irregular, curved, or formed within a solid block of material.

Abstract: A Kinetic Harvester is disclosed, including a central shaft connecting two large disks like wheels and an axle. Four long cylindrical arms radiate from the middle of the central shaft and end even with the edges of the disks. Four main braces connect the edges of the disks and the ends of the arms butt into them. A smaller secondary brace runs from the ends of the arms around the circumference of the structure. Two large flat panels are attached to the each arm so that they are able to open and close like a book. There are stops running across the inner surfaces of the disks, down the central shaft and down the inner surfaces of the main braces. When the panels are opened they come up against the stops and are prevented from bending backward. The secondary brace runs between the panels when they are closed and prevents them from both swinging the same way. Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels.

Abstract: An electromagnet is mounted beneath the playfield. Sensors, such as optical switch pairs, are positioned on the playfield in operative relation with the electromagnet to detect the ball and to produce a signal in response thereto. The microprocessor, in response to such signals, briefly pulses the magnet to accelerate the ball or energizes the electromagnet for an extended period to grab and hold the ball. When the ball is held, the magnet is thereafter deenergized and briefly pulsed to propel the ball on the playfield. In one embodiment, a plurality of electromagnets are provided along a ball path which are operated sequentially by the game microprocessor to move the ball from magnet to magnet in a stepped manner.