Safety device for video cassette recorder

Details Safety device for video cassette recorder Safety device for video cassette recorder

1990-11-14

1992-03-17

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Miscellaneous

360 71, 360 69, G11B 1500

Patent

active

050973789

ABSTRACT:
Motor control apparatus comprised of a drive circuit for supplying drive current to a motor, an overload detector coupled to the motor for detecting the magnitude of the motor current to produce an output signal if that current exceeds a predetermined threshold level caused by motor overload, and a control circuit coupled to the drive circuit and responsive to the output signal for controlling the drive current supplied to the motor, thereby controlling motor operation.

REFERENCES:
patent: 4494181 (1985-01-01), Ramlohr et al.
patent: 4644234 (1987-02-01), Nola
patent: 4663573 (1987-05-01), Maetani et al.
patent: 4677356 (1987-06-01), Tsuneda et al.

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