Method of making multi-layer coil using electroconductive flexible sheets

A method of forming a multi-layer coil comprising steps of:

• alternately stacking an insulating sheet and at least two electroconductive sheets having end faces said end faces having electroconductive patterns;
• rounding said stacked insulating sheet and electroconductive sheets such that said end faces are brought toward each other;
• connecting together said end faces;
• and
• connecting together said electroconductive patterns on said end faces,
• wherein said electroconductive patterns include a first oblique pattern on a first electroconductive sheet of said electroconductive sheets and a second oblique pattern on a second electroconductive sheets of said electroconductive sheets, wherein said first oblique pattern is formed inversely to said second oblique pattern.

A method of forming a multi-layer coil comprising steps of:

• providing electroconductive sheets having ends and patterns, said ends including connectors connected to said patterns;
• alternatively stacking said electroconductive sheets and insulating sheets to form a laminated structure;
• rounding said laminated structure such that a first end of said ends contacts a second end of said ends and forms an electrical connection,
• wherein said patterns include a first oblique pattern on a sheet of said electroconductive sheets and a second oblique pattern on another of said electroconductive sheets, wherein said first oblique pattern is formed inversely to said second oblique pattern.

A method of forming a multi-layer coil comprising steps of:

• providing electroconductive sheets having ends and patterns, said ends including connectors connected to said patterns;
• alternatively stacking said electroconductive sheets and insulating sheets to form a laminated structure;
• and
• rounding said laminated structure such that a first end of said ends contacts a second end of said ends and forms an electrical connection;
• said insulating sheets comprising electrical insulators,
• said patterns comprising electrically conductive patterns;
• said electroconductive sheets comprising flexible sheets;
• said electroconductive sheets including a first sheet having a first oblique pattern;
• and
• said electroconductive sheets including a second sheet having a second oblique pattern,
• wherein said first oblique pattern is formed inversely to said second oblique pattern.