Today in Engineering

May 23

We did a thing with op amps and called it an oscillator.

We created a signal up in LabView.  It looked like this: (and by LabView I meant everycircuit)

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https://e.edim.co/56309139/kEXp1EPuizuYHWDh.pdf?response-content-disposition=filename%3D%22Day_23_AC_Op_Amps___Oscillators__AC_Power.pdf%22%3B%20filename%2A%3DUTF-8%27%27Day%252023%2520AC%2520Op%2520Amps%2520%252C%2520Oscillators%252C%2520AC%2520Power.pdf&Expires=1495829873&Signature=OBwfwA1VdpCgj4VeMXRmu-duEiJm3FcGZ1BSuhlchmR1ItRuI-VppJPWAUYKYy5DSCFQfBl0hhLxqU1ZjqKJC4QaUPUc15ErJMi3a3iW1JNqfCBSllFWlI-ueGxvzrIyoa9gQDXwg2e71foCuD8ZispgDUYfrNAGbwf81lYZc3hB03o2DRzWuE-f0NLsIJHb8VIfKvMhpEIWpdiwfwfuXgDeq-5KiYD4la7VOFBd4CxOV836sxdYy54ojS4qvIoetXviaKxlmWT9XJqr7CChxJISCsh0CmnW52TgadXGHg7LiL1SZC4seWQpbdiQjlKK-568fd4j8xRA61op-5C1Tw__&Key-Pair-Id=APKAJMSU6JYPN6FG5PBQ

LAB: Oscillators
I notice this lab is made simpler if we can use Fourier transforms on the circuit components.  But I'll hold off on that.
PRELIMINARY WORK / DESIGN Design an OP AMP Relaxation Oscillator having a frequency in Hz equal to the last 3 non-zero digits of your Student ID Number (such as 274). Choose convenient values for the capacitor C and . Determine the value of R using the formula for the period T. Test your design using EveryCircuit and the model for the OP27 OP AMP.

LABORATORY PROCEDURE / RESULTS Each group member will construct the circuit that they designed and simulated. For each circuit, measure the OP AMP output voltage and the voltage across the capacitor using the oscilloscope. Record a rough sketch of the voltages in your laboratory notebook. Use the storage option to save a copy of your results for publishing in your lab report. Your lab report should include all design calculations and any necessary modifications. Be sure to comment on how well your results agreed with the theoretical calculations. If things didn’t go as they should have, explain what may have gone wrong.