i want to make a sinewave generator in the audio frequency range
i used this as a guide https://www.electronics-tutorials.ws/oscillator/rc_oscillator.html

but when i try the circuit in multisim i got

the signal kept on increasing even to the Tvolts range. pls help what do i do?

 

Hello,

It looks like the gain is to high.
Have a look at this schematic:



It is taken from page 15-15 of the attached PDF.

Bertus

 

the signal kept on increasing even to the Tvolts range.

That's because the functional model op amp you used has no voltage limit (other than any computational limits of the simulator).
Use a model that operates from a fixed supply voltage.