Abstract: A power supply device is presented. The power supply device includes a voltage conversion unit. The voltage conversion unit includes a capacitor divider circuit. The capacitor divider circuit includes a plurality of capacitors coupled to each other in series. Further, the voltage conversion unit includes a step-down transformer coupled to at least one of the plurality of capacitors. The power supply device also includes a low pass filter configured to be coupled to at least one high voltage power line and the voltage conversion unit, where the low pass filter is configured to provide filtered power to the voltage conversion unit.

Abstract: A power supply device is presented. The power supply device includes a voltage conversion unit. The voltage conversion unit includes a capacitor divider circuit. The capacitor divider circuit includes a plurality of capacitors coupled to each other in series. Further, the voltage conversion unit includes a step-down transformer coupled to at least one of the plurality of capacitors. The power supply device also includes a low pass filter configured to be coupled to at least one high voltage power line and the voltage conversion unit, where the low pass filter is configured to provide filtered power to the voltage conversion unit.

Abstract: A novel PDLC film composition that contains a mixture of acrylate monomers that provide certain advantages when combined with a liquid crystal. The mixture of acrylate monomers contains one monofunctional monomer that gives rise to a homeotropic anchoring condition, and one monofunctional monomer that gives rise to homogeneous anchoring condition in the PDLC film made from the composition of the present invention at a selected temperature. The monomer mixture also contains a polyfunctional acrylate monomer. PDLC films made from these compositions have advantages over films made from compositions that have only one monofunctional acrylate monomer. Also, by using the process of the present invention, one can prepare a PDLC film that exhibits a low switching voltage in a desired temperature range.