Abstract: An electrical device that comprises a printed circuit board, which has a first mounting surface, a second mounting surface, a mounting edge, and a plurality of mounting pads on the first mounting surface and the second mounting surface, and an electrical component that has a ball grid array. The electrical device further comprises an adaptor, interposed between the mounting edge and the electrical component, and comprising a body, made of an electrically non-conductive material, and a plurality of electrical pins, made of an electrically conductive material and passing at least partially through the body of the adaptor. The first end of each one of the plurality of electrical pins is electrically directly mounted to a corresponding one of the spaced apart solder balls. The second end of each one of the plurality of electrical pins is electrically directly mounted to a corresponding one of the plurality of mounting pads.

Abstract: Disclosed herein is an apparatus that comprises a printed circuit board having a first major surface, a second major surface opposite the first major surface, and a minor surface perpendicular to the first major surface and the second major surface. The apparatus also comprises an electronic component that comprises a ball grid array, having spaced apart solder balls, on a mounting surface of the electronic component. The electronic component is mounted to the minor surface of the printed circuit board such that the mounting surface is parallel to the minor surface and perpendicular to the first major surface and the second major surface. The solder balls of the ball grid array are electrically connected to both the first major surface and the second major surface of the printed circuit board.

Abstract: Disclosed herein is an electrical connector, comprising a plug and a receptacle. The plug comprises first electrical contacts electrically isolated from each other and arranged into a first outer contact annulus and a first inner contact annulus concentric with and radially spaced apart from each other. The receptacle comprises second electrical contacts electrically isolated from each other and arranged into a second outer contact annulus and a second inner contact annulus concentric with and radially spaced apart from each other. The plug is selectively connectable with the receptacle.

Abstract: Disclosed herein is an electrical connector. The electrical connector comprises a flexible printed circuit comprising electrical elements on a flexible substrate. The electrical elements each comprises a solder pad and contact pad connected by a link. The electrical connector also comprises a base to at least partially surround the flexible printed circuit. The base comprises a connection interface to facilitate electrical connection with the flexible printed circuit through the base. The electrical connector further comprises a receptacle to couple to the base to partially enclose the flexible printed circuit. The receptacle exposes a portion of the flexible printed circuit to facilitate selective electrical connection with the flexible printed circuit through the receptacle.

Abstract: Described herein is a use-limiting connector for limiting use of an electrical tool. The use-limiting connector comprises a plurality of electrical circuits each having an electrical resistance different than any other of the plurality of electrical circuits. Each electrical circuit of at least two of the plurality of electrical circuits corresponds with a different use of a plurality of uses of the use-limiting connector.

Abstract: Disclosed herein is a use-limiting connector for limiting use of an electrical tool. The use-limiting connector includes an electrical circuit, a plunger, movable between a first position and a second position, and a biasing member, configured to urge the plunger into the first position and configured to incrementally uncoil into respective torsional states as the plunger moves between the first position and the second position. With the plunger in the first position and the biasing member in a first one of the torsional states, the biasing member closes the electrical circuit. As the plunger moves from the first position to the second position, the plunger moves the biasing member to open the electrical circuit.