Etched magnetic coil

Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil

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336223, H01F 2730

Patent

active

043085130

ABSTRACT:
A method of forming an electrical coil and the coil formed thereby wherein flat, thin conductors are formed on a flexible dielectric substrate with one end of each conductor formed offset to overlie an adjacent conductor; by selectively bending the substrate, the offset conductor ends contact the adjacent conductors to form continuous turns; and by suitably trimming the conductor a relatively thin, flat coil is formed whose wall thickness is small compared to wire wound coils having the same number of turns. This coil is particularly useful in bubble memories.

REFERENCES:
patent: 2597237 (1952-05-01), Friend
patent: 3267402 (1966-08-01), Reimer
IBM Technical Disclosure Bulletin, "Flexible Circuit Solenoid," Gonnella et al. vol. 16, No. 9, Feb. 1974.
IBM Technical Disclosure Bulletin, "Printed Circuit Coil," Moreno, vol. 12, No. 6, Nov. 1969.

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