Balanced output circuit

Details Balanced output circuit Balanced output circuit

1989-05-01

1990-12-18

Isen, Forester W.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

330258, 381121, H04B 1500

Patent

active

049792180

ABSTRACT:
An electronic output transformer permits elimination of hum and other ground loop interference from audio signals transmitted between separated pieces of equipment. The transformer has a balanced differential output and feedback circuits which force the differential output voltage to equal the input voltage, and which force the current in the balanced output lines to be precisely equal and out-of-phase. This permits hum and extraneous signal rejection at the input of the remotely located piece of equipment and results in common mode rejection ratios in excess of 100 db.

REFERENCES:
patent: 3582802 (1971-06-01), Weekes et al.
patent: 3705365 (1972-12-01), Szabo et al.
patent: 3845404 (1974-10-01), Trilling
patent: 4352998 (1982-10-01), Baker et al.
patent: 4393347 (1983-07-01), Looper
patent: 4752744 (1988-06-01), Aoki
patent: 4794349 (1988-12-01), Senderowicz et al.
patent: 4833418 (1989-05-01), Quintus et al.

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