Operation of the square-triangular wave oscillator

Operation of the square-triangular wave oscillator -...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Operation of the square/triangular wave oscillator An operation amplifier circuit that creates both a square wave and a triangular wave is comprised of three separate stages as shown in Figure 1: 1) the positive feedback op-amp known as the Schmitt trigger (OP 1), 2) a negative feedback op-amp known as the integrator (OP2) and 3) an inverting operational amplifier (OP 3). First let’s discuss how we can get a square wave response from this circuit. The square wave is essentially the output voltage produced by the Schmitt trigger. The Schmitt trigger is a modification of the positive feedback operational amplifier. A positive feedback op-amp takes in noise and amplifies it. This amplified noise is outputted in the Vout. However, the Vout in the positive feedback op-amp is looped back to the V+ input of the op amp, thus adding to the V+. According to the formula for an op- amp, Vout = Aol(V+ - V-), the output voltage will increase until it hits Vcc or –Vcc. This
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern