DEVICE CHARACTERIZATION WITHIN VIRTUAL LAB USING LABVIEW Supervisor : Prof. Joseph John Department of Electrical Engineering Vaibhav Singh (Y4466) Vikas Kumar Sharma (Y4482)
Jan 19, 2016
DEVICE CHARACTERIZATION WITHIN VIRTUAL LAB
USING LABVIEW
Supervisor : Prof. Joseph JohnDepartment of Electrical Engineering
Vaibhav Singh (Y4466) Vikas Kumar Sharma (Y4482)
OBJECTIVES
To perform the device characterization experiments using a computer interface.
To carry out characterization experiments from any remote computer on the network.
DEVICE CHARACTERIZATION Studying the characteristics of a device
Used in prediction of device behaviour in various circuit conditions
Helpful in circuit designing
VIRTUAL LAB
Conducting the experiment in Lab1. Circuit2. Power supply3. Function Generator/ Potentiometer4. Multimeter , CRO etc.
Using computer interface1. Circuit2. Power supply3. DAQ card4. LabVIEW
Remote access from another computer
ADVANTAGES OF VIRTUAL LAB
Can play with circuit parameters
Get real-time plots on the computer
Experiments can be done from anywhere
Educating large number of students
Cost savings
DEVICES USED
BJTo One of the most basic and extensively used
semiconductor device
JFETo Similar to MOSFET in characteristics.
EXPERIMENTAL SETUP
Computer
Device circuit
NI PCI DAQ card 6221
NI BNC 2120 connector
LM 324, LM 741 as Voltage follower
CD 4051 Analog Mux/Demux, HJR1-2C relay
Power Supply
CIRCUIT DIAGRAMS
BJT circuit JFET circuit
COMBINED CIRCUIT DIAGRAM
EQUATIONS
FRONT PANEL
BLOCK DIAGRAM
RESULTS - BJT
RESULTS – JFET
REMOTE COMMUNICATION
Host Computer
in Lab
A computer in Remote location
Device selection,Circuit
Parameters (Resistance values)
Results and Graphs
REMOTE COMMUNICATION
DSTP (Data Socket Transfer Protocol)
Web Publishing Tool
ADVANTAGES OF WEB PUBLISHING TOOL OVER DSTP
DSTP requires IP address of the user who wants to communicate.
DSTP use UDP while Web Publishing Tool uses TCP/IP.
Web Publishing Tool does not require full installation of LabVIEW and it can be accessed through web browsers as it uses http.
FUTURE WORK
Other devices like MOSFET, medium power transistor can be used in project with small modifications.
Other experiments can be implemented in the same manner.
THANK YOU
QUESTIONS???