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Beginners / Blocking Phantom Power 48V from Audio output
« Last post by Saimoun on Today at 11:20:08 am »Hi
I have a simple audio output circuit, the audio comes from an opamp with no negative rail, so the signal is from 0 to 3.3V (centered around 1.65V), so I have a coupling cap to bring it to zero volt.
How could I make the output blocking +48V phantom power? Would it be enough to add a 63V cap (in the opposite polarity as the current caps) just before the output?
What about if the plug is a TRS instead of XLR, thinking that pluging the cable in and out will momentarily create some shorts?
Thank you!
I have a simple audio output circuit, the audio comes from an opamp with no negative rail, so the signal is from 0 to 3.3V (centered around 1.65V), so I have a coupling cap to bring it to zero volt.
How could I make the output blocking +48V phantom power? Would it be enough to add a 63V cap (in the opposite polarity as the current caps) just before the output?
What about if the plug is a TRS instead of XLR, thinking that pluging the cable in and out will momentarily create some shorts?
Thank you!