Discussion
How does a photodiode normally operate?
Answer: A
A photodiode is usually reverse biased, and the reverse current then rises in proportion to the incident light, which gives a linear and fast response. It can also be used unbiased in photovoltaic mode, which is what a solar cell does, but that is slower and less linear. Forward bias and breakdown are not used. The same device operated in two different modes trades speed and linearity against the need for a supply. Working one numerical case through both schemes side by side fixes the distinction better than any rule of thumb.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development