ENGR337 Lab1 2020 Spring
Lab 1 LTSpice and Lab Report Preperation
Name: Jesse Duran
Email: Jiduran@fortlewis.edu

1. LTSpice and Lab Report Preperation

2. Introduction
In this lab we were tasked with coding up circuits using Spice and simulating them using LTSpice. These simulations were then compared to both calculated values and manually tested voltages and currents. The goal of this lab was to gain familiarity with LTSpice, a useful circuit simuation software.

3. Materials and Methods

Materials

Breadboard

MulitMeter

3x 2k resistors

3x 3k resistors

ADC converter

Jumper wires

LTSpice circuits were coded up with accordance with lab1's tasks on Yilectronics.com. The first circuit was tested with a physical circuit and a multimeter. Subsequent circuits were simulated by coding.
 
4. Results

Task1:
   
    Figure1. Current simulation of Circuit1.

   
    Table1. Simulated, Calculated, and Tested Voltages and currents from Circuit 1.

Task2:
   
    Figure2. Transient analysis of Circuit 2. Time delay of 2.17 ms

   

    Task3:
   
    Figure 3. DC sweep of circuit showing changing voltage.
   
Task4:
   
    Figure 4. AC Sweep which plots Amplitude vs Frequency. Often used for testing bandwith of the circuit

Task5:
   
    Figure 5. DC Pulse, time delay of capacitor charging is 19.85ns

5. Discussion
    This lab introduced us to the different analysis features of LTSpice as well as the usefulness of comparison between simulation and real life.