Lab 16: Impedance and AC Analysis

 Intro:

The purpose of this lab is to analyze circuits with “real” inductors and the impedance associated with them.

Data:

Determine the inductance.

R_L = 10 ohms

R_ext= 69 ohms

ω= 2πf= 2π*1000

V_IN,RMS=.582V

I_IN,RMS=6.3mA

Z=V/I=92.38ohms

L=√(Z²-( R_L+ R_ext)²  = 7.62mH

              jω

Investigating a Series of RLC circuits

c=1/(jω)² L=3.32μF 

This is too large it should be smaller than 1μF.

For this reason I could not continue.

Lab: 9 Pspice

Intro:
The purpose of this lab is to familiarize my self with the program Pspice for soling complex circuits.
1.

2.

3.

Lab: 8 Freemat

Intro:

The purpose of this lab is an introduction to using the program freemat.

Assignment 1

V1=15V,V2=7V,R1=20ohms,R2=5ohms,R3=10onms

 

The current thought R3 is -.186A

 

Assignment 2

2 2e(-t/τ)  and 2(1-e-t/τ) 

Assignment 3

3 sin(2t + 10⁰) and 3 cos(2t - 30⁰) and at 10Hz

Lab 15: Mat Lab Complex Numbers

Intro

We used Matlab to solve a system of equation with complex numbers.

Lab 14: MOSFET Control of an electric motor

Intro:

The purpose of this lab is to set up a mosfet for speed control of a provided motor.

Open Loop Voltage Control Circuit

The Gate Voltage is about 4V.

Turning the pot controls motor voltage because it regulated the voltage into the MOSFET

It is difficut to control the speed because there in not a linear relationship with V_GS

PWM Chopper MOSFET

Lab 13: 2nd Order RLC Circuits Lab

Intro:

We used this website

http://www.mhhe.com/engcs/alexander2e/netan_tutorials/tutorials/tutmenu.htm

 to learn to solive 2^nd order RLC circuits.

Lab 12: Oscilloscope 101

Intro:

The purpose of this lab is to get introduced to using an oscilloscope.

Exercise 1: Displaying and Measuring a Sinusoid

Frequency 5kHz

Period 0.2ms

Peak to peak Amplitude 5V

Zero to peak Amplitude 2.5V

Anticipated RMS = 5/√2

VDC -10.3mV

VAC=1.855mV

Exercise 2: Including a DC Offset

+2.5V DC offset

DC coupling

AC coupling

The difference between them is the ground positioning

VDC = 2.48 mV

VAC = 1.91 mV

Exercise 3: Displaying and Measuring a Square Wave with offset.

VDC = 2.49 mV

VAC = 3.08 mV

RMS= 5V/200μs = 25000

Exercise 4: Measuring Mystery signals

DC voltage 4V

Frequency 67.56 Hz

Pk-Pk Amp .4V