Hi all,
I have developed a simple spectrum analyzer circuit that is powered by a wall transformer. It receives audio input and outputs a handful of frequencies to LEDs. I am using a "Y" adapter at the audio input so that I can listen to the audio with headphones while the circuit is operating.
I'd like to improve this project by introducing some powered electronics. The first of these is to setup powered speakers instead of headphones. Second is to use a stereo or computer's audio as the signal, instead of a battery-powered mp3 player. Later, I may also decide to go for higher-power LEDs.
My question has to do with ground loops. By hooking up these power electronics into my circuit, is there a chance I might create a ground loop and damage my equipment? How can I design my circuit improvements so that I do not have to worry about damaging my circuit or audio equipment?
Thanks!
I have developed a simple spectrum analyzer circuit that is powered by a wall transformer. It receives audio input and outputs a handful of frequencies to LEDs. I am using a "Y" adapter at the audio input so that I can listen to the audio with headphones while the circuit is operating.
I'd like to improve this project by introducing some powered electronics. The first of these is to setup powered speakers instead of headphones. Second is to use a stereo or computer's audio as the signal, instead of a battery-powered mp3 player. Later, I may also decide to go for higher-power LEDs.
My question has to do with ground loops. By hooking up these power electronics into my circuit, is there a chance I might create a ground loop and damage my equipment? How can I design my circuit improvements so that I do not have to worry about damaging my circuit or audio equipment?
Thanks!
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