Other

Alcatel USA Sourcing, L.p.

Stephen Arthur Harner

Matthew Christopher Perry

Hong Li

Gary Leon Smith

A hybrid preamplifier with a vacuum tube input stage driving a JFET output stage dubbed TIJO (for Tube Input JFET Output) that uses zero feedback circuitry and a common low voltage B&plus; power supply. A single output low voltage transformer provides all necessary voltages including the filament voltage. No attempt is made to minimize distortion or maximize bandwidth by adding feedback. The vacuum tube is mounted externally to allow easy tube swapping for varying the gain and tonal palette, with no dangerous high voltages present.

Tube input JFET output (TIJO) zero feedback audio amplifier

A system for switching communications signals between a first communications network and a second communications network is provided. The system includes a J1 interface coupled to the first communications network by a J1 span, a E1 interface coupled to the second communications network by an E1 span, and an interface processor in communication with the J1 interface and the E1 interface. The interface processor is then operable to translate signals formatted for the J1 span into an E1 format for transmission on the El span. The interface processor is further operable to translate communications signals formatted for the E1 span into a J1 format for transmission on the J1 span.

Growing community of inventors

Frisco, TX, United States of America

Stephen Arthur Harner