High accuracy PCB luo shi coil that contains school directrix circle

The utility model provides a high accuracy PCB luo shi coil that contains school directrix circle, at upper and lower about, four compensating winding of four position symmetry installations of printed circuit board, compensating winding constitutes school directrix circle. Perpendicular and even distribution in four positions of the upper and lower left and right sides of printed circuit board offour compensating winding of school directrix circle are printing traditional thread binding putting of copper on the circuit board. It is direct with to printed circuit board that compensating winding and the perpendicular symmetry of base plate, compensating winding pass through the circuit diagram. Compensating winding is the spiral shape. Printed circuit board is double -deck printed circuitboard, and every layer of printed circuit has evenly arranged the coil, and every layer coil passed through the jogged joint. This luo shi coil includes the loop line device, the loop line device includes coil skeleton, the ro