Contactless signal detection system for use with one or two signal conductor wires has coils surrounding wires connected to differential amplifier impedance reducer and signal bus interface

摘要

Induction coils (2a,2b) surround portions of signal conductor wires (1a,1b). They are connected (a1,a2) to a differential amplifier (3). The amplifier may have a direct connection (b0) to a data bus. The amplifier sends difference signals (b1,b2) to an impedance reduction circuit (4). The impedance reduction circuit sends impedance reduced difference signals (c1,c2) to a signal bus interface circuit (5). This circuit produces a first bus signal (d1) and a redundant second inverted bus signal (d2).