- #1
david90
- 312
- 2
I have an mp3 player in my car and i think it is having a ground loop issue. Whenever I plug it into my cig. lighter, I could hear a whining noise. The whining noise's pitch is proportional to the engine's RPM. I'm trying to fix and understand the problem because my background is electrical
http://img11.imageshack.us/img11/2213/drawing1tc.jpg
The picture above is a model of the the mp3 player and the ground loop. Is the model above accurate? Would the audio from the headphone have a whining noise that originates from the car's alternator? From my understand, the ground loop is caused by noise current flowing through Rground. Since the audio generator references the node @ Rground, the audio source picks up the noise and outputs it to the headphones.
http://img11.imageshack.us/img11/2213/drawing1tc.jpg
The picture above is a model of the the mp3 player and the ground loop. Is the model above accurate? Would the audio from the headphone have a whining noise that originates from the car's alternator? From my understand, the ground loop is caused by noise current flowing through Rground. Since the audio generator references the node @ Rground, the audio source picks up the noise and outputs it to the headphones.
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