0
\$\begingroup\$

I have a problem with simulating a Schmitt-Trigger and analyze it with MATLAB. I can do this with MultiSim or Proteus but for more advanced analysis I need to do this in Simulink.

In Library Browser under SimScape, there is a Foundation Library and "Electrical" inside it. There is no problem until here.

But when i take an op-amp and couple of resistors, I can not create a simple Schmitt-Trigger circuit. I mean there is not any junctions for supplying opamp.Take a look at this

I'm really new at using Simulink and searched over google and here but can not find any solutions. And another problem how can I measure the output voltage and plot it to see classical Schmitt-Trigger response?

\$\endgroup\$
1
\$\begingroup\$

An op-amp isn't a schmitt trigger. If you don't have a schmitt trigger in your set of models, you can model one using an op-amp, but you need positive feedback (output sent to input) to make that work.

See this for ways to do so:
http://en.wikipedia.org/wiki/Schmitt_trigger#Op-amp_implementations

\$\endgroup\$
  • \$\begingroup\$ Thanks for the answer. I know that but I found this circuit for schmitt trigger applications. Tried it in multisim and proteus. It worked. I think I need to learn more about schmitt trigger. Thanks anyway \$\endgroup\$ – kenan May 5 '14 at 15:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.