METHOD OF CIRCUIT TRIPLE RESERVATION IN MULTILAYERED PRINTED CIRCUIT BOARDS Russian patent published in 2018 - IPC H04B15/02 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the construction of printed circuit boards, specifically to the methods for their reservation and tracing. Method includes the mutual arrangement of the redundant and spare circuits, the arrangement and tracing of the redundant and standby cards, when the reference conductor is made in the form of separate layers on the redundant and backup boards, the redundant and backup boards are glued together with a layer of dielectric with a relative dielectric constant greater than that of the dielectric substrates of the redundant and standby boards, differs in that two additional circuits are additionally introduced, corresponding to each other the fragments of the paths of the redundant and reserve circuits are located parallel to each other in the adhesive layer of the dielectric, redundant and one spare circuits are located on the redundant board, two other spare circuits are located on the standby board, the paths of the data of the reserve circuits are located on the same level, redundant and backup radioelectronic components are located on opposite sides of the backed up and back-up printed circuit boards.

EFFECT: technical result consists in providing redundancy with decreasing susceptibility of the redundant circuit to external conductive emissions.

1 cl, 2 dwg