Abstract: An efficient electronics package comprising an integrated circuit, a transistor case packaging, a power supply, an actuation segment and a sensor segment, wherein engagement of the integrated circuit causes the actuation segment to be activated. The integrated circuit may be engaged, for example, by a level-hold trigger or the sensor segment.

Abstract: An efficient electronics package comprising an integrated circuit, a transistor case packaging, a power supply, an actuation segment and a sensor segment, wherein engagement of the integrated circuit causes the actuation segment to be activated. The integrated circuit may be engaged, for example, by a level-hold trigger or the sensor segment.

Abstract: A method and apparatus for pressurizing a fillable-structure, wherein a space defined by the pump, an untraversed plunger, and a closure is a volume, Vt, and a stop to limit the travel of the plunger along the pump so a volume, Vb, remains within the space defined by the pump, the fully traversed plunger, and the closure. Traversal or manipulation of the plunger expresses gas from the pump to the Tillable-structure wherein the pressurization of the fillable-structure is limited by the ratio of Vt to Vb whereby the fillable-structure can not be pressurized beyond a pressure Pmax.