Question

What is photo diode? Mention its one use.

Answer 1

A photodiode is a semiconductor device that converts light into current. The current is generated when photons are absorbed in the photodiode. A small amount of current is also produced when no light is present.

Photodiodes find application in the following:

1. Cameras

2. Medical devices

3. Safety equipment

4. Optical communication devices

5. Position sensors.