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Ground Loop Isolators - Basic Car Audio Electronics
http://www.bcae1.com/glisoltr.htm#:~:text=Ground%20loop%20isolators%20are%20used%20to%20break%20the,to%20the%20mounting%20position%20of%20the%20head%20unit.
DIY Ground Loop Isolator: How To Make a Ground Loop …
https://www.radio4all.org/diy-ground-loop-isolator/
Connecting the Ground Loop Isolator. On the primary side of the ground loop isolator, connect the two male RCA connectors two their female counterparts. Likewise, attach the other two male RCA connectors from the speaker to the secondary side of the ground loop isolator. Power your radio system, and tune in to any station.
Your own audio isolator - Audio | Video | Circuits
https://www.epanorama.net/documents/groundloop/audio_isolator_building.html
The grounding pin 1 of the output XLR connector can be wired to metal case of the isolator, but do not connect the input XLR connector pin 1 to anything. The transformer to be used in the circuit above should be 600:600 ohm audio transformer which can handle the signal levels you are about to transfer through the isolator wihtout causing too much distortion or other …
groundloops - Isolating audio ground between devices ...
https://electronics.stackexchange.com/questions/350212/isolating-audio-ground-between-devices
The audio signal ground will be tied to the same ground. The solid state amplifier requires a dual supply which I will create with a voltage divider, giving -15.5v, virtual ground and +15.5v. If your audio signal ground is tied to the Ground of the Preamplifier and thus the -15.5V Rail Then your clipping all the negative voltage excursions of the AC Signal.
How to implement a ground loop isolator in an audio ...
https://electronics.stackexchange.com/questions/604332/how-to-implement-a-ground-loop-isolator-in-an-audio-circuit-that-connects-to-usb
Given that your circuit doesn't communicate with the laptop via USB, there's no need for a digital isolator: Just place an isolated 5V DC/DC converter in the 5V power path right after the USB connector. Your entire circuit is powered from an isolated source then and there can't be any ground loops anymore.
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