Various methods for implementing a variable content movable control are provided. Complementary p-type based transistors are utilized along insertion loss insensitive paths allowing biasing voltages to alternate between supply and ground, allowing for negative voltage supplies and blocking capacitors to be dispensed with, while improving performance. A niobium compound andor tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water. The soluble PHEX therefore comprises the active ectodomain. Further, the server application will maintain statistics on client computers connections based on status signals received from the client application. A power supply, which operates in a pass through mode and which incorporates a plurality of sense leads, compensates for voltage drops due to system wiring and measurement shunts within the bandwidth limits of the power supply.