Abstract: In one embodiment, an apparatus is attached to a feature to be deployed on a satellite. The apparatus includes a first material having an impedance, a second material coupled to the first material configured to provide a current or voltage to the first material causing the first material to generate heat based on the impedance after a launch process of a launch vehicle carrying the satellite has completed, and a third material configured to change state at a transition temperature. A release mechanism is coupled to the third material and holds the feature in an undeployed position on the satellite. The heat generated by the second material causes the third material to change state when the transition temperature range is reached and the release mechanism is released from the third material when the third material is in the second state to deploy the feature.

Abstract: A headphone unit having left and right ear piece units and an input cord having two conductors an end of each of which projects into a housing. Within the housing, the input cord is connected to two equipment cords which terminate in a pair of input plugs. Each of the equipment cords has two lines. The input plugs each have portions for receiving left and right audio signals. The lines carrying left audio signals from the two input plugs are connected to the input cord conductor which leads to the left ear piece unit and the lines carrying right audio signals from the two input plugs is connected to the input cord conductor which leads to the right ear piece unit.