[ Transformers; chokes, namely, choking coils for use in electrical apparatus; electric coils; inverters; ] power supplies; voltage regulators; power supplies for lighting apparatus; drivers, namely, voltage regulators for lighting apparatus; power supplies for LEDs; [ telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and rout...