Device Characterization within Virtual Lab using LabVIEW
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Transcript of Device Characterization within Virtual Lab using LabVIEW
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DEVICE CHARACTERIZATION WITHIN VIRTUAL LAB
USING LABVIEW
Supervisor : Prof. Joseph JohnDepartment of Electrical Engineering
Vaibhav Singh (Y4466) Vikas Kumar Sharma (Y4482)
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OBJECTIVES
To perform the device characterization experiments using a computer interface.
To carry out characterization experiments from any remote computer on the network.
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DEVICE CHARACTERIZATION Studying the characteristics of a device
Used in prediction of device behaviour in various circuit conditions
Helpful in circuit designing
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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
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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
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DEVICES USED
BJTo One of the most basic and extensively used
semiconductor device
JFETo Similar to MOSFET in characteristics.
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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
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CIRCUIT DIAGRAMS
BJT circuit JFET circuit
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COMBINED CIRCUIT DIAGRAM
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EQUATIONS
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FRONT PANEL
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BLOCK DIAGRAM
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RESULTS - BJT
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RESULTS – JFET
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REMOTE COMMUNICATION
Host Computer
in Lab
A computer in Remote location
Device selection,Circuit
Parameters (Resistance values)
Results and Graphs
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REMOTE COMMUNICATION
DSTP (Data Socket Transfer Protocol)
Web Publishing Tool
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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.
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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.
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THANK YOU
QUESTIONS???