NON-CIRCULAR HIGH Q COILS

• US 3,676,813 A
• Filed: 05/12/1971
• Issued: 07/11/1972
• Est. Priority Date: 05/12/1971
• Status: Expired due to Term

• Current Assignee: John O. Renskers
• Original Assignee: John O. Renskers
• Inventors: Renskers, John O.
• Primary Examiner(s): Kozma, Thomas J.
• Application Number:
  US05/142,723
• Time in Patent Office: 426 Days
• Field of Search: 336/189,190,191,225,226,227,228,136,192
• US Class Current: 336/189
• CPC Class Codes: H01F 27/027 specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards

Abstract

A low cost, high Q mounted coil consisting of a non-circular, close wound coil having a turn length substantially longer than the circumference of the inscribed cylinder thereof mounted on a cylindrical coil form.

Claims

1. A mounted high Q coil comprising a single layer, close-wound, noncircular solenoid winding and a cylindrical-surfaced coil form fitted within the inscribed cylinder of said winding, said inscribed cylinder being proportioned so that said winding engages said surface frictionally, the inscribed circle of each turn thereof being an element of the surface of said inscribed cylinder, said winding having a turn length at least half again greater than that of a cylindrical coil fitted to said form.

2. The combination as set forth in claims 1 wherein the turns of said coil have a triangular configuration.

3. The combination as set forth in claims 1 wherein the turns of said coil have a configuration having substantially different major and minor axes.

4. The combination as set forth in claims 1 wherein the turns of said coil have a stellate configuration with reentrant angles between the apices thereof, said reentrant angles collectively defining said inscribed cylinder.

5. The combination as set forth in claim 1 wherein the inscribed circle of any of said turns is tangent to said turn at a point on said turn transverse across the coil wire to a point where the circumscribed circle is tangent.

6. An absorption trap assembly comprising a coil form having a cylindrical surface of uniform diameter, a relatively low Q, circular, close-wound coil fitted on said surface, and a high Q coil comprising a single layer, close-wound, non-circular winding having an inscribed cylinder equal to that of said low Q coil and a turn length substantially greater than that of said low Q coil fitted on said surface in coupled, energy absorbing relation with said low Q coil.

7. The combination of claim 1 wherein the turns of said coil are unsupported other than at the points of engagement on said form except for such support as said turns may derive from adjacent turns.