Abstract: A phase comparison and error correction circuit which utilizes one of a plurality of outputs of its phase detector as a biasing voltage for its error correction circuit.

Abstract: This invention relates to a direct current to direct current power converter for use within a transceiver module which connects a user host station, i.e., terminal, printer, workstation, etc., to an Ethernet coaxial cable. The converter provides a adequately regulated DC output voltage, provides high voltage isolation between the Ethernet cable and the operating workstation, and which utilizes fewer parts than known similar power supplies, soft start threshold provisions, overload protection, an LED (light emitting diode) performance indicator, and a trimmer for precise output voltage adjustment.

Abstract: A multipoint data communication system is disclosed for transmitting data to and from a plurality of communicating devices via an interconnecting cable. This interconnecting drop cable couples a transceiver unit to a communicating device, such as a personal computer, workstation, printer, or the like. The drop cable herein has only two twisted, jointly shielded, pairs of wires to transmit the three signals (transmit, receive, collision) and power. AC differences in the pairs constitute the third, phantom, signal channel. DC differences in the pairs provide the power source for transceiver operations. This cable is considerably less expensive than the industry standard cable.

Abstract: A circuit providing a means of transferring and storing the energy from the collapsing field of a deenergized inductive load to a capacitor, and subsequently delivering this energy back to the inductive load to aid in its re-energization. A first circuit path is provided for transferring the energy from the inductive load to the capacitor, and a second circuit path is provided for transferring the energy from the capacitor to the inductive load, said second circuit path including a signal translating device, the conductivity of which is controlled by the charge on the capacitor at the time re-energization of the inductive load is initiated.