Rotary transformer with unique physical and electrical character

Details Rotary transformer with unique physical and electrical character Rotary transformer with unique physical and electrical character

1976-02-25

1978-06-20

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

360108, G11B 552

Patent

active

040965350

ABSTRACT:
A unique concentric rotary transformer for use in a rotating head tape transport, wherein a length of tape is positioned relative to the rotating head and data is recorded and/or reproduced therefrom, is disclosed. The rotary transformer comprises two assemblies one of which rotates relative to the other and thereby transmits electrical signals. Each assembly includes a ferrite cylindrical core piece with two grooves machined in the core piece. The grooves are axially and circumferentially displaced along a longitudinal axis of said core piece. A continuous coil with two legs, is positioned within the grooves of the core piece whereat mutual inductances generated in the ferrite core by each leg of the coil effectuate signal transfer across the transformer interface.

REFERENCES:
patent: 3763327 (1973-10-01), Hescher
patent: 3823415 (1974-07-01), Fisher et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 1, Jun. 1975, p. 47.
IBM Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972, p. 363.

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