Question

Help: If someone could please explain the concept of IR interruption, bias voltage, and what the diagram is showing I appreciate it. The description confused me even more. the second picture shows how the IR diodes are positioned facing each other for reference.


BRIEF DESCRIPTION OF IR & PHOTO DIODE SENSING SWITCH -や 80547 IR diode is connected through a resistance to the dc supply. A
media%2F2cd%2F2cdf29fb-54f1-4e2f-9da1-f1
BRIEF DESCRIPTION OF IR & PHOTO DIODE SENSING SWITCH -や 80547 IR diode is connected through a resistance to the dc supply. A photo diode is connected in reverse biased condition through a potential divider of a 10k variable resistance and lk in series to the base of the transistor. While the IR rays fall on the reverse biased photo diode it conducts that causes a voltage at the base of the transistor. The transistor then works like a switch while the collector goes to ground. Once the IR rays are obstructed the driving voltage is not available to the transistor thus its collector goes high. This low to high logic can be used for the microcontroller input for any action as per the program.
0 0
Add a comment Improve this question Transcribed image text
Answer #1

on sou erge biased Photo diode, eledron- hole Paivr eenates &Voltase uoi be everaa erald a cobg the diode. he Po-tential throhon light get obetYU didノPhoto diode, lotu mot toook 2 dark aroent geg generated which mo Vo (tase at the Photo be m to Colle

Add a comment
Know the answer?
Add Answer to:
Help: If someone could please explain the concept of IR interruption, bias voltage, and what the ...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT