A device for seating a semiconductor device in a semiconductor test handler is provided. The assembly features a waist belt having a coupling and fastener each featuring at least two slots separated by at least one bar. The power converter further includes a third switch configured to selectively cause a third voltage to be provided to the switch node when the first and second switches are not coupling the switch node to the higher and lower voltages. A top gate is disposed over the channel region and a bottom gate is disposed below the channel region. The stator typically includes a core structure of magnetically conductive material having a set of slots arranged on an internal face of the core structure and one or more sets of coils disposed within the slots. An optical layered body including an optical layered body comprising a light-transmitting substrate and at least a hard coat layer and a low refractive index layer, firmed on the light-transmitting substrate, wherein 1) the low refractive index layer is formed on the outermost surface, and 2) the low refractive index layer contains an antistatic agent.