ENGR201 Lab 2019 Fall
Lab 2 Using LTSpice for circut simulation
Name: Jesse Duran
Email: JIDuran@fortlewis.edu

Lab 2:Using LTSpice for circut simulation

2. Introduction:
Simulation software is a tool that should be in every engineer's arsenal. This lab is aimed at becoming proficient with LTSpice, a powerful circut simulation program, aswell as gaining hands on experince with electronic testing equipment. The circuts were compared to hand calculations to ensure each simulation's output was as expected.

3. Materials and Methods

Equipment

Breadboard

Multimeter

DC power supply

Jumper wires

LTSpice

3k Ohm resistors

A circut was created in LTSpice using three seperate methods, coding in Notepad, coding in LTSpice, and using LTSpice's GUI. The same circut was built on the bread board. The muiltimeter was used to compare the physical circut to the simulation and hand calcuations.
4. Results:

Figure 1. Circut built in LTspice

Figure 2. Circut coded in Notepad

Figure 3. Circut coded in LTSpice

Figure 4. Voltage reading of node V2 (Vout).

	Calculation	Simulation	Measurment
Current	0.82 mA	1mA	0.82mA
Vout	2.5V	2.5V	2.5V

Table 1. Table of calculated, simulated, and measured Vout and Current.

Figure 5. Current reading using multimeter.

Figure 6. DC sweep of V1 and Vout.


Figure 7. Vout reading 0 volts.

Figure 8. Power consumption reading of circut.

5. Discussion:
Learning how to use LTSpice is a useful skill for evaluating electric circuts. The different graphs displayed in this lab show the capabilities of LTSpice. An important factor of testing the circuts by hand is the comparison it provides to ensure the readings are not outlandish. The use of the multimeter briges the theoretical and the reality as well as reenforces the purpose of the equipment.