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FUNCTION GENERATOR 1Abstract This project requires us to design and build a circuit that generates specified functions on the oscilloscope as given on the project description Also we were required to design a means of selecting different frequencies and different amplitudes This was especially difficult because the selection had to be made directly from the breadboard For the final part of the lab we were to draw the graphs we obtained to show how the various functions were generated digitally The results we got were very sound We were able to generate all of the minimum requirements a square wave and ramp wave Also we were able to generate the waves that would give us extra credit a triangle wave and approximations to a sine wave We also discovered a way to easily vary frequency and amplitude 2Introduction This experiment uses four operational amplifiers opamps to deliver these waveforms in the 6 Hz to 7000 Hz range The sine wave is a pseudo sine wave produces by a very simple wave shaping circuit A digital counter can be used along with a DAC to generate analog voltage functions of time such as square wave and ramp wave In this lab we were to design and build a circuit that generates an analog square wave and a saw-tooth ramp wave of voltage using a counter and DAC 3 Design Process While working on this project we thought of alternatives that would increase efficiency An alternative we considered was to switch to a different project This was thought about when we were having trouble with the implementation of the circuit However we decided to stick with this project We decided this because we had already put in much thought and work into this particular project Also we decided to use flip-flops to simplify the circuit 4 Implementation CIRCUIT DESCRIPTION Square sine and triangle waves are produced using an LM348 and passive components The
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