As the name of LDR denotes, their resistance to electricity depends on the intensity of light shining on them. ... Contrary to use of LDR in varying intensities of light, the photodiode is mainly used in the reverse bias, turning off when a certain light intensity is exceeded.
:::::::::::::::::::::::::::: LDR :::::::::::::::::::::::::::::
It is a component that is sensitive to light. When light falls upon it then the resistance changes. Values of the resistance of the LDR may change over many orders of magnitude the value of the resistance falling as the level of light increases.
:::::::::::::::::::: PHOTO DIODE ::::::::::::::::::::
Photo means light and diode means a device consisting of two electrodes. A photo diode is a light sensitive electronic device capable of converting light into a voltage or current signal. It works on the principle of photo generation.
LDR is the most commonly used photo sensor.
Photodiode is used in applications that can only do with two values: either on or off.
LDR varies the light depending on certain factors.
Photodiode has a quicker response time as opposed to LDR which is analog.
LDR is a bidirectional resistor whereas photo diode is a unidirectional resistor.
Both LDR and photo diode have low costs.
Examples of LDR in use is street lights.
Examples of photodiodes in use is precision equipment like laboratory appliances e.g. spectrometer.
In this video we try to explain about LDR and Photodiode in very detail.. already made video on this components separately.. but in this video try to explain this two component working and difference between this two components in details with proper example and proper working all in Hindi. the exact difference between LDR and PHOTODIODE will cover in this video.
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6 сен 2024
