@epostma 

Hello again, and again great thanks for your detailed response.

However... The integral part of this seems to not work quite right... I've been trying your suggestion, but unfortunatly, it seems to be giving me the error above. (Error, (in Units:-TestDimensions) improper op or subscript selector)

File in OP is updated with my current attempt, and a new screendumb is linked below.

Thanks much again.

Image: here

@epostma 

Hello - and thanks for your very detailed response.
I've made it work, following your suggestion. Works like charm, but i, for some reason, cannot convert the unit output to volts.

I'm now trying the exact same approach, but this time, instead of a harmonic function (sine), now it's a piecewise function (triangle and square functions respectively). These i cannot plot properly... In fact, i can't make them plot at all...

I've updated the file in the OP to what i've got currently, and i will also update the image. 

Hope someone can help me with this one as well :)

Image: here