Can someone measure for me how much current goes through an audio jack. So just measure right channel -> ground & left channel -> ground. They'll be the same probably, but you never know. I need this quickly and can't measure it here myself, pls help me!
Surely that depends on the signal being pumped down the cable that the jack is connected to ? Or am I not understanding what you are saying properly ?
I *want* to say 1.25v, but I have no way of verifying this. Plus, you have to understand that the voltage varies along with the audio signal being passed through it as well. What you could do is look for a VU meter guide and see what the voltage reference level is set at for the LM3915 chip.
I know that it will vary, but I don't think it will vary that much, not like between 5 and 12. I need to know because I'm using a hex schmitt NOT port and the output depends on the voltage given to the input.
it really depends on the hardware i think IIRC my old cheap soundcard pumped out a whopping 1v while my newer sblive! puts out around 5v both at highest volume with no earpnones connected
You can actually feel the current coming from some headphone jacks on hi-fi's, but when i measure them with my voltmeter they always read around 8 volts or less. Strange how I can feel them.
u can probably feel it cos its ac and so constantly changing while dc u wont notice it cos its not changing and will feel different ne way cos u are holding something
Oh it's AC, I was thinking that already, because I measured 0.015v DC when I didn't play anything and between 0.015 & 0.040 when I played songs on Winamp . Hm, that kinda sucks, I don't think the auto-mode in my circuit will work, because it's AC. Damn . Does anyone know a way to solve that?
