help in function generator Project

Thread Starter

M070RealKing

Joined Apr 18, 2013
2
hi!
I'm working on function generator Project , but there is a problem i can't solved .
the problem in the triangle wave like this :



Such as in the picture, the field of My function generator between 5v-3v and the real 5v-0v.
here the circuit :




and Thanks :)
 

Thread Starter

M070RealKing

Joined Apr 18, 2013
2
thanks guys !
Problem solved :rolleyes: but after hours of headaches and tests,
here's the schema :


I wish if I can help who faced the same problem :(
 

tubeguy

Joined Nov 3, 2012
1,157
Look at this:
OpAmp Triangle Generator

Notice the triangle wave from the 74HC14 is slightly curved and not symmetrical. This is due to the non-linear charging of the capacitor through the resistor.
An op-amp provides constant current charging which gives a more linear triangle wave.
 
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