hg_man
Well-known member
Looking at some mic schematics, I've found that pin 2 and pin 3 of the XLR are tied to the outer sides of the transformer, and the phantom power supplied to the mic then comes off a center tap.
How does this work? I thought that a transformer couldn't be used with DC, yet here it is. Or is the amount of DC current so small that it doesn't saturate the transformer? I calculate 7 mA flowing through each leg of the transformer to the center tap (48V/6810 Ohms)
How does this work? I thought that a transformer couldn't be used with DC, yet here it is. Or is the amount of DC current so small that it doesn't saturate the transformer? I calculate 7 mA flowing through each leg of the transformer to the center tap (48V/6810 Ohms)