I have one of those average cheapo computer microphones that connects into the sound card via pink 3.5mm jack.
I wanted to find out how much voltage can I expect from it, to get a ballpark value I could use for my opamp noise detection circuit.
The microphone works fine when connected to the PC.
And so I hooked the microphone to a scope, expecting to see my voice visualized on the screen when I talk, but all I am getting is a flat line.
So, what am I doing wrong here?