# Quick question on AC

So if my input is an alternating voltage source, some sort of function generator plugged into the wall... will it oscillate around ground or will it oscillate above ground? Hope this question makes sense.

berkeman
Mentor
So if my input is an alternating voltage source, some sort of function generator plugged into the wall... will it oscillate around ground or will it oscillate above ground? Hope this question makes sense.
Depends on the source. Most lab function generators let you specify Amplitude, Frequency, and DC Offset.

It's very likely that the signal generator will be grounded, if so then the signal will oscillate above and below the ground.

vk6kro