We have a project to make a function generator that outputs a square, triangle, and sine wave. We have already made one, but there are several problem with it.
The square output only has the positive side (Vmin = 0 V; Vmax = 11.8 V). Maybe an offset circuit can fix it?
The amplitude of the triangle and sine waves can be varied, but this doesn’t work with the square wave. We’re thinking that an amplifier circuit can solve this problem.
Here's our schematic:
(Copied from ElecCircuit)
UPDATE: The square wave output is now fixed. We just now need to put the three waves through an amplifier circuit, so it can amplify its amplitude and vary it with a potentiometer as well. Any recommendations for an amplifier circuit?