Electrical and electronic components and devices, namely, power line filters, power line matchers, namely, electrical controlling devices for use in correcting impedance matches between different electrical systems, impedance matching devices, frequency dividers, crossovers, namely, audio crossovers, electric coils, capacitors, transformers, voltage regulators, relays, ballasts, namely, lighting ballasts, choke coils, voltage surge protectors, voltage regulators for electric power, junction b...