How does an optocoupler work?

Related questions

1. Why galvanic isolation is required?
2. Which is better for transmission AC or DC?
3. Why is a Wheatstone bridge used in the measurement of strain?
4. What is a flyback transformer used for?
5. Is HVDC better than HVAC?
6. What is a half H bridge?
7. What is LLC resonant converter?
8. What is half bridge and full bridge?
9. What is the advantage of Buck boost converter?
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Tags

1. #conducting
2. #device
3. #light
4. #switch
5. #infrared
6. #proportional
7. #applied
8. #optocoupler
9. #which
10. #through
11. #works
12. #makes
13. #circuits
14. #current
15. #isolated
16. #turns
17. #connecting
18. #flowing
19. #photosensitive
20. #basically
21. #first
22. #stops