A jig is provided for holding an elongate member to be surface treated. The electrical power generation system utilizes a master controller for controlling operation of devices coupled to an AC electrical grid and DC electrical grid based on parameter values associated with a renewable power generator. A broadcast content identifier references to a broadcast service, content or program which the notification event is related with. The sign can be biased to a neutral position. A calibration technique uses a precision reference resistor and voltage reference controlled current source to introduce a voltage drop from the input side of a power supply sense resistor calibration is made at the common mode voltage of the power supply output.