| 摘要 |
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 100db.
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