Audio signal amplifier for an electromagnetic phono cartridge

Details Audio signal amplifier for an electromagnetic phono cartridge Audio signal amplifier for an electromagnetic phono cartridge

1985-05-14

1987-02-17

McElheny, Jr., Donald

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

G11B 300

Patent

active

046445170

ABSTRACT:
An audio signal amplifier for an electromagnetic transducer, comprises a transformer which has a primary winding coupled to the electromagnetic transducer for receiving an output audio signal from the electromagnetic transducer and a secondary winding for producing a transformed audio signal as an output. The transformer has a turn ratio of the primary winding and the secondary winding which is selected to n:1, where n is a real number greater than 1. The audio signal amplifier further comprises a current-voltage conversion circuit which is coupled to the secondary winding of the transformer for converting an audio signal current from the secondary winding into an audio signal voltage.

REFERENCES:
patent: 4470020 (1984-09-01), Mohr

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