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TAs: Deniz Aktas, Emine Bardakci |
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Figure 6 shows LED’s has characteristic voltage-current graph. An LED starts to operate after the voltage is greater than a threshold point. Below that threshold point, LED will not light since the current flow is blocked. After that point, LED would let current flow, therefore the light emitted by the device can be observed. The light intensity is proportional with the forward current magnitude. More current would yield more emitted light.
2. Pre-Lab Quiz
Quiz Date: xxxxxx
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When you click the right click of the mouse for both front and block diagram pages, you will see the indicators and control parameters.
You can find the “Simulate signal” from Programming>Waveform>Analog Wfm>Generation>Simulate Signal.
Double click on the Simulate Signal, make the signal type is Square, Frequency is 10 Hz, Amplitude is 5, duty cycle is 10 (the starting value).
Add “Analog Output” diagram from Academic I/O>Control I/O
Double click on the Analog Output, choose Analog Output (n samples) and change the configuration of the pin as B/AO0.
You can add Waveform Chart and Waveform Graph from the Silver segment on the Front panel.
Insert the screenshot for your results: Duty Cycle is 10,50,100
Make the circuit according to below figure:
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5. Post-Lab Report
Due Date: xxxxxx
The report for Procedure 1 is expected to include:
· All the screenshots of Block Diagram and Front Panel
The report for Procedure 2 is expected to include
· All the screenshots of Block Diagram and Front Panel
· All the screenshots corresponding the graphs obtained by the steps
· Explanation of how the rectangular filter works
· Explanation of what is observed by changing the filter
The report for Procedure 3 is expected to include
· All the screenshots of Block Diagram and Front Panel
· All the screenshots corresponding the graphs obtained by the steps
· Comment on the LED behavior, is it like beating (on-off) or continuously lighting? Please, explain the logic behind duty cycle, what is it?
Additional Resources:
,Responsible TAs:
Deniz Aktaş, denizaktas20@ku.edu.tr
Emine Bardakçı, ebardakci20@ku.edu.tr