A driver circuit is designed employing a current sensing circuit adapted to sense driving current being supplied to one or more light emitting devices. A heat stable cured aryl polysiloxane composition is further disclosed, along with a method of making that heat stable cured aryl polysiloxane composition from the curable aryl siloxane composition. A search for a data image containing the requested data is initiated. A rod or other elongated connecting element is received in a passage of the receiver in contact with the saddle, and the engaging member engages the connecting element against the saddle, which engages the saddle against the spacer, which in turn engages the proximal head of the bone anchor in the receiver. Therefore, the p-channel MOS transistor receives a positive stress in the direction in which a channel length is narrowed from the expanding film.