Oscillating erase current circuit

Details Oscillating erase current circuit Oscillating erase current circuit

1993-02-25

1995-01-31

Hajeo, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 46, G11B 509, G11B 503

Patent

active

053863267

ABSTRACT:
An oscillating erase current circuit for erasing information recorded on magnetic media. The inductance of an erase head is coupled with capacitors to form a tank circuit having a natural resonant frequency. The self-oscillating erase current circuit generates an oscillating signal having a frequency of oscillation determined by and therefore equal to the natural resonant frequency of the tank circuit. Once enabled, the self-oscillating erase current circuit continuously oscillates without any external drive circuit.

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