I have an assignment to simulate in and output in pspice and compare my results to what i messured in real life using functiongenerator, oscilloscope and generator. The problem is i dont know how to get the sinuscurved display when i simulate, i only get straight lines... I already have my messurements on paper where i calculated different frequencies then compared in and ut to see if it applified. I would really be grateful if you helped me guys :(

  • \$\begingroup\$ Are you running a transient analysis? \$\endgroup\$ – owg60 Dec 1 '16 at 15:13

i only get straight lines

That's because: -

V2 is the wrong way round and there are no power supplies to the op-amps. Neither is there a ground connection along the bottom horizontal connection between V1 and R6.

  • \$\begingroup\$ wow didnt see that, well i fixed the V2 and there is a ground connection on the bottom line i forgot to place a junktion silly me. But how do i power the op amps? \$\endgroup\$ – jumper Dec 1 '16 at 15:29
  • \$\begingroup\$ Use V2 to apply positive voltage to the pin marked V+ \$\endgroup\$ – Andy aka Dec 1 '16 at 15:36
  • \$\begingroup\$ Oh okey thank you didnt see that i forgot to place wires there. it looks like this now: ![velleman.png](postimg.org/image/z8o6etrip) Its stil a straight line though, do i need to change something in the settings? ![vellemandata.png](postimg.org/image/lseidlv0p) \$\endgroup\$ – jumper Dec 1 '16 at 16:08
  • \$\begingroup\$ Well, it looks like V1 is not producing a signal and it should. Check the settings for V1. \$\endgroup\$ – Andy aka Dec 1 '16 at 17:47
  • \$\begingroup\$ I almost fixed it, i added a different sinus power source look: velleman.png But i dont know what to put in AC? Simulation: ![vellemandata.png](postimg.org/image/s9me6k4hb) \$\endgroup\$ – jumper Dec 1 '16 at 17:52

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.