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Introduction

In laboratory two we will be examining four diode applications used in modern electronics: the clipping circuit, peak detector circuit, clamping circuit, and the voltage doubler circuit. The purpose for examining these circuits is to diagnose how the diode functions within the circuit while the load resistance changes.

The laboratory begins with a prelaboratory designed to familiarize us with the prescribed circuits. Using Multisim, the four circuits mentioned above will be built with the probes of an oscilloscope attached at the input power source and across the prescribed output. This will allow for screen captures of the input and output waveforms, which will serve as our theoretical data.

In the laboratory the four circuits will be built using a 1N4148 diode. The circuits will follow the same circuit diagram used in Multisim, and the oscilloscope probes will be connected at the same positions. Following the procedure given, we will obtain screen captures of the designated input and output waveforms of the circuit. This will allow for direct comparison of the theoretical and experimental data, as well as allow for comparison of how the circuit affects the output.

In the following report there will be three main sections presented: Theoretical Calculations, Experimental Results, and a Conclusion. In the theoretical calculations section, the Multisim screen captures of each prescribed circuit will be presented. Included in this section will be a circuit diagram and a short explanation of the circuit’s function. This section will be a useful tool for examining the experimental results. In the next section ─experimental results─ the laboratory screen shots from the oscilloscope will be presented. This is the main part of the laboratory: building the prescribed circuits physically in lab and then collecting oscilloscope screen shots of the prescribed inputs and outputs. Finally, in the conclusion section of this report, a summary of the experiment will be presented. Included in this summary will be rationale of the learning objectives and experimental error.

Conclusion

This experiment was an opportunity for students to investigate diode applications. It allowed for insight into how a diode functions in an AC circuit, while also allowing further insight into the operation of diodes in more complex circuits.

This laboratory is designed to further the student’s understanding of simple diodes and helps provide more intuitive reasoning to diode applications. The laboratory provided a great learning experience with a self-explanatory procedure. The screen captures off the oscilloscope allowed for easy comparisons of the input and output waveforms of each circuit, and also allowed for great precision in experimental data.

Laboratory 2 was designed for the students benefit and will help greatly in the upcoming lecture for ECE-204. Unfortunately, the lecture portion of this laboratory is slightly behind.