Abstract: Technology for converting electricity generated by photovoltaic cells to AC or DC output power is disclosed. In some examples of the disclosed technology, a zonal power inverter has a plurality of voltage converters, the outputs of the voltage converters being connected in series and being electrically isolated from one another except for their output terminals being connected in series. The power inverter can further comprise a DC/AC converter coupled to a positive output terminal of one of the voltage converters. In some examples, an isolated multi-junction photovoltaic cell includes a plurality of photosensitive semiconductor active layers, each of the active layers being electrically isolated from the other active layers, and formed from a respective material having a different band gap than the other active layers. In some examples, the multi-junction photovoltaic cell is coupled to the input of the zonal power inverter.

Abstract: In an example, a wearable article includes a nonwoven textile sheet having a first portion and a second portion contiguous with the first portion. The first portion has a first density and a first modulus of elasticity. The second portion has a second density less than the first density and has a second modulus of elasticity less than the first modulus of elasticity. The first portion is shaped differently than the second portion as an integral implement of the wearable article. A method of manufacturing a wearable article may comprise thermoforming the first portion while the second portion contiguous with the thermoformed first portion is not thermoformed.

Abstract: In an example, a wearable article includes a nonwoven textile sheet having a first portion and a second portion contiguous with the first portion. The first portion has a first density and a first modulus of elasticity. The second portion has a second density less than the first density and has a second modulus of elasticity less than the first modulus of elasticity. The first portion is shaped differently than the second portion as an integral implement of the wearable article. A method of manufacturing a wearable article may comprise thermoforming the first portion while the second portion contiguous with the thermoformed first portion is not thermoformed.