Question

State advantages of photodiode.

Answer 1

1. Quick response when exposed to light.
2. The reverse current is linearly proportional to the intensity of the incident light. (Linear response)
3. High speed of operations.
4. Lightweight and compact size.
5. Wide spectral response. E.g., photodiodes made from silicon respond to radiation of wavelengths from 190 nm (UV) to 1100 nm (IR).
6. Relatively low cost.