7 ms·
Back in the good old days of analog audio we made differential audio inputs with Iron and copper. :-) Transformers are amazing at reducing common mode noise l
by lebuffon 2mo ago
Back in the good old days of analog audio we made differential audio inputs with
Iron and copper. :-)
Transformers are amazing at reducing common mode noise like induced hum, but rather expensive compared to the price of these boards.
Fun fact: The entire landline telephone system used to rely on balanced lines with transformers for in/out. The hum nulling is so good that trunk lines had no shielding inside buildings.