ISOLATOR FOR SIGNAL CARRYING LINES

摘要

The invention relates to a method of providing a DC and low frequency currents isolation barrier, and coupling of high frequency signals between sections of transmission line (4, 5; 4a, 5a). Circuit boards (8, 9) including conductive elements, arranged to be connected to respective sections of a transmission line (4, 5; 4a, 5a), are spaced from each other and a capacitor (C1), leadless, is mounted between the circuit boards (8, 9) so that the first terminal of the capacitor (C1) is in intimate contact with the first circuit board (8) and the second terminal of the capacitor (C1) is in intimate contact with the second circuit board (9). The arrangement is such that the capacitor (C1) couples signals across the isolation barrier from the first circuit board (8) to the second circuit board (9).