INDUCTANCE Russian patent published in 1997 - IPC

FIELD: design of printed circuits. SUBSTANCE: device has flat spirals which are located on layers of flexible printed circuit as rectangular matrix in pairs in opposite to one another so that direction of turns are aligned. Said spirals provide inductance units. Inner turns of pairs of spirals are connected to each other through contact plates and metal-coated holes in them. Outer turns of flat spirals of adjacent inductance units are connected through printed jumpers. Inductance units are arranged along folding lines of flexible printed circuit. When printed circuit is folded, spirals of inductance units are coaxial. In addition flexible printed circuit has partial opposing cuts so that opposing combs of flexible strip are provided. Cutting lines are located between rows of matrix of flat spirals which are connected to achieve serial zigzag-shaped circuit, which start and end are terminals of device. Flexible strips are arranged in pairs along cutting lines in zigzag direction and folded along non-cut parts of opposing combs. Each flexible strip is arranged in zigzag direction for inductance units. EFFECT: increased functional capabilities. 5 dwg