Hi I constructed a circuit to create a 1Hz square wave with LM741 Opamp. The first part makes that and it makes it perfectly.
But I need to convert it to a 8Vpp triangular wave. Without any offset, I simulated the circuit below in LTSpice it was flawless. But in real life I got some weird offset from the output of the triangular wave converter.
Figure I implemented, first part creates 1Hz 21 Vpp zero offset square wave,2nd part convert this into a triangular wave with 8Vpp:
In real life it has 8.2 Vpp which is very good for me but it starts from -6 to +2 (it has -2 V offset)
How can I get rid off this offset?