Abstract: A termination assembly for a chimney is provided having an exhaust layer with an exhaust tube adapted to receive exhaust air from an appliance. An outlet opening of the exhaust tube terminates in the exhaust layer. An intake layer is separated from the exhaust layer. The intake layer has an enclosure defining a positive pressure area within the enclosure and a plurality of openings. Each of openings has a cross-sectional area that decreases from an exterior surface of the enclosure toward the positive pressure area within the enclosure. An intake tube is adapted to receive intake air at an inlet opening positioned in the positive pressure area. The positive pressure area in the intake layer has a pressure greater than the atmospheric pressure outside the termination and in the exhaust layer to prevent flow in the exhaust tube from being reversed.

Abstract: A system for providing power to remote equipment where a transmit unit having lasers transmits laser light over optical fiber to a receive unit having photovoltaic receivers. The photovoltaic receivers convert the laser light to electrical energy for the remote equipment. The receive unit also sends a feedback signal to the transmit unit which the transmit unit uses to determine whether the lasers should be enabled for full power.