slayer exciter(tesla coil) circuit modification to allow better audio input
It's a miracle that your phone works near this device. The capacitive touchscreen is based on quite weak electric field between your finger and the sensors behind the glass. When the ground of your phone and the exciter are connected, the field from the exciter antenna probably wins the touchscreen sensing field. You can add a common mode filter and increase the distance. In theory you can also keep your hand and the phone in a transparent metallized plastic bag which is connected to the ground of your phone. Only offline content is available.