CBSE Class 12-science Answered
Draw the circuit diagram of an illuminated photodiode in reverse bias. How is photodiode used to measure light intensity?
Asked by Topperlearning User | 19 Jun, 2014, 03:39: PM
Expert Answer
The magnitude of the photocurrent depends on the intensity of incident light as the photocurrent is proportional to incident light intensity.
A change in the photo current indicates a change in the light intensity, if a reverse bias is applied. Thus photo diode can be used as a photo detector to detect optical signals.
Answered by | 19 Jun, 2014, 05:39: PM
Concept Videos
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Applications of p-n Diode - Part 1
This video explains the diode in a forward and a reverse bias. -
PN diode application
Diode V-I characteristics Diode as a rectifier Special purpose diodes. -
Applications of pn Diode
Diode V-I characteristics Diode as a rectifier Special purpose diodes
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