Broke for magnetic disc drive apparatus

Details Broke for magnetic disc drive apparatus Broke for magnetic disc drive apparatus

1981-12-09

1983-11-22

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

318371, 369268, G11B 1922

Patent

active

044172885

ABSTRACT:
A rotation control device for a magnetic disk drive apparatus, which provides electrical regenerative braking of the apparatus prior to and continuously with actuation of an electro-mechanical braking system, once power is cut off to the apparatus. The use of electrical regenerative braking minimizes wear on the mechanical braking components and reduces maintenance on the apparatus. The use of electro-mechanical braking at low speeds assures reliable continuous braking when the electrical regenerative braking becomes relatively ineffective at low speeds.

REFERENCES:
patent: 981601 (1911-01-01), Adams
patent: 2194759 (1940-03-01), Logan

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