Squarewave

[freeman093]

Im trying to set a voltage source to give me a square that is +1/-1V. I have got the supply to go from +1 to 0, but I cant work out how to make it negative. Is there some way of adjusting the y axis?

 

[DF96]

Let me look into my crystal ball. . . The mist is clearing - there is a sign which says RT*M.

Does that mean anything?

 

[freeman093]

Not to me it does nt.

 

[Mooly]

You'll have to tell us more about the set up. Do you mean viewed as on a scope or in simulation ?

 

[qusp]

you need a negative supply, or floating center tap/ground reference, to allow a +/- power supply. if you are unable to get a negative swing from a positive supply, thats no surprise

 

[freeman093]

I build an integrator circuit on LT Spice but I cant work out how to make the voltage supply ac.

 

[Mooly]

This would give 1 volt peak to peak at 1Hz

 

[freeman093]

Ah! I see. Thanks guys.