Electronic Security system.pdf - Texas A&M University at...

Texas A&M University at Qatar
Electrical Engineering
ECEN 214
Electric circuit Theory
Student Name: Mahmudul Alam
Semester: Spring 2008
Section: 501
Lab #5 Report
“Application of Op-Amp: Electronic Security System Design:
Part 2 of 2”
Group # (4)
Team Member: Misam Jaffer
Lab Engineer: Engineer Wesam Mansour
Date of Experiment: March 2, 2008
Date of Due: March 11, 2008
“On my honor, as an Aggie, I have neither given nor received unauthorized aid on this
academic work”

Procedure
In task 1, the circuit shown in figure 1 was built. The main element of the circuit was a
latch. An IC called CD4044B was used as the latch. The enable button (pin 5) was used
connected to high to enable the device. After initializing the circuit, the /ALM button was
pressed and the output S, Q and R was measured with Fluke DMM. Pressing the /RESET
button, the procedure was repeated. Table 1 lists these data.
Figure 1. The Latch
(Figure taken from lab manual 5)
In task two, the portion of the circuit shown in the box in figure 2 was constructed in the
NI ELVIS breadboard. The main elements of the circuit were two LEDs and an
operational amplifier. Pressing the /ALM button voltage Q and buffer output was
measured by Fluke DMM and the output of LED was observed. The procedure was
repeated pressing the /RESET button. Table 2 lists these data.
Figure 2. Buffer and LED
(Figure taken from lab manual 5)
Mahmudul Alam Page 1 of 5
ECEN 214 Lab 5: Op-Amp Application: Electronic Security System Design Date: March 11, 2008

For task three, a Printed Circuit Board (PCB) was used. This printed circuit board