METHOD FOR MANUFACTURING MULTILAYER FLAT WINDING OF INDUCTIVE COMPONENT Russian patent published in 1997 - IPC

FIELD: electrical engineering; manufacture of electric inductive components and transformer windings. SUBSTANCE: at least two holes of different diameters are made on inner ends of coils, hole of smaller diameters being made on even-numbered conducting layer and that of larger diameter, on odd-numbered one; many holes are made beyond coils and external ends of coils of even-numbered conducting layer are placed at hole of smaller diameter and those of odd-numbered ones, at hole of larger diameter; in addition, holes aligned with those in conducting layers are made in insulation their diameters corresponding to respective odd-numbered conducting payers; holes of external ends of even- and odd-numbered conducting layers of coils form stepping metallized piles passed through entire multilayer structure and made by depositing tin-lead alloy in vacuum. Winding turns in the form of coils are formed by known method on printed-circuit boards 1, on two sides; interlayer turns are interconnected electrically by means of metallized piles 7 of tin-lead alloy deposited in vacuum. Printed-circuit boards are assembled in stack with insulating spacers between conducting layers and electrically connected into monolithic structure also by means of stepping metallized piles 8 formed by depositing tin-lead alloy in vacuum. Layers are not to be stuck together by means of adhesive or compounds. EFFECT: facilitated manufacture. 1 dwg