How to use simulink to find square wave in op Amp circuit ?

i have done my circuit , but both of Vin and Vout in sine wave signal . I need the Vout in square wave . Any idea how to convert the sine wave into square wave ?

This is my result of my Vout ( bottom) that i need in a square wave signal

[wann Azihil]

This is my simulink circuit file

Answer 1

[Joel Van Sickel]

Hello Wann,

there are numerous square wave generator topologies that can be used. You can google search to investigate them and pick one that makes the most sense for your application. Conversely, you can also just generate the square wave in simulink, and pass it to a controlled voltage source. To assist with the modelling, try using op amps and comparators from the simscape electrical library. The op amp in your current model is a simple op amp from the foundation library and does not have rails. Typically, simulaitng a square wave generator will require your components to have voltage rails to limit the output. (typically Vcc and -Vcc/gnd) An example of a higher fidelity op amp that you could use for this would be the finite gain op amp.

https://www.mathworks.com/help/physmod/simscape/ug/finite-gain-op-amp.html

Here is a useful example circuit as a reference: https://www.mathworks.com/help/physmod/sps/ug/triangle-wave-generator.html

Regards,

Joel