Tagged Questions

0
votes
1answer
208 views

USB ground on MSP430 Launchpad interfering with Comparator_A input voltage

I'm trying to read an audio signal from an Android phone as a serial input to an MSP430G2553, adapting this design to use the MSP430's onboard comparator module instead of an LM324. The Android code ...
3
votes
1answer
149 views

Ground question

Beginner here. I am working on a project using a Sure amplifier and noticed there is a ground label on one of the holes used for mounting. Do I need to do anything special for this? The link below ...
3
votes
2answers
515 views

Power supply noise in audio

I have what is surely a classic problem with regard to power supply switching noise and audio but I am unable to sort myth from reality with regard to what I found so far on the topic. Setup: I ...
6
votes
2answers
160 views

Grounding Shielded Panel-Mount Connectors

I'm building an amplifier in a conductive metal chassis. The general grounding plan is to have an audio ground, a power ground, and a digital ground that converge at a single point on the chassis. ...
1
vote
1answer
137 views

Line level with respect to GND

This seems like it should be a really easy one, but I'm having trouble finding a clear reference or explanation for it. According to Wikipedia, line level has a peak around 0.5V, but I can't tell if ...