Hello Everyone,
So I am working on a little circuit to supply power to 2 devices at the same time. One requires 12V and the other 5V. I am using a 12V battery for the power, and a 7805 to regulate to 5 volts. These are both audio devices, and they will power up fine, but upon connecting them together with an xlr cable, I get a hum on the headphone outputs. What I find a bit odd is that on both devices the ground for the power input and the ground for the xlr are tied together. Could this be causing some kind of loop? I attached a rough wiring diagram. Any help is much appreciated.
So I am working on a little circuit to supply power to 2 devices at the same time. One requires 12V and the other 5V. I am using a 12V battery for the power, and a 7805 to regulate to 5 volts. These are both audio devices, and they will power up fine, but upon connecting them together with an xlr cable, I get a hum on the headphone outputs. What I find a bit odd is that on both devices the ground for the power input and the ground for the xlr are tied together. Could this be causing some kind of loop? I attached a rough wiring diagram. Any help is much appreciated.
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