I would like to simulate the effect of noise in a circuit built in Multisim so that I can make better component choices to improve my design. The main source of concern for me is that the circuit will be affected by noise created by ambient sources of electromagnetic radiation since there will be IR LED/phototransistor pair in the circuit, where the IR LED will modulate a 20kHz square wave signal. Can anybody make any suggestions as to how I would do this?

  • \$\begingroup\$ Doesn't MultiSim contain a noise source and noise analysis mode? \$\endgroup\$
    – Joel B
    Commented Nov 7, 2011 at 19:43
  • \$\begingroup\$ @JoelB - I don't know, I've never attempted to simulate the effect of noise in a circuit before, so thanks for the heads-up. \$\endgroup\$
    – D Brown
    Commented Nov 8, 2011 at 1:30

1 Answer 1


It is possible. Check here for instructions.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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