Frequency converters; Current converters; Converters, electric; Analog to digital converter (ADCs); Digital to analog converters (DACs); Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Analogue to digital converters; Direct current converters; Digital to analogue converters; Electric power converters; Digital photo image converters; Electronic controllers for use with power converters; DC/AC power converters; Television and video converters; ...