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Photoresistor
- A photoresistor (also known as a photocell, or light-dependent resistor, LDR, or photo-conductive cell) is a passive component that decreases in resistance as a result of increasing luminosity (light) on its sensitive surface, in other words, it exhibits photoconductivity.
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What is a light-dependent resistor (LDR)?
What is a light dependent resistor?
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A photoresistor (also known as a photocell, or light-dependent resistor, LDR, or photo-conductive cell) is a passive component that decreases in resistance as a result of increasing luminosity (light) on its sensitive surface, in other words, it exhibits photoconductivity.
Jun 18, 2023 · Contents. A light-dependent resistor ( LDR) is a passive electronic component that changes its resistance according to the intensity of light that falls on its surface. LDRs are also known as photoresistors, photocells, or photoconductors. They are made of semiconductor materials that have high resistance in the dark and low resistance in the ...
When a photoconductive material is connected as part of a circuit, it functions as a resistor whose resistance depends on the light intensity. In this context, the material is called a photoresistor (also called light-dependent resistor or photoconductor).
Light illumination dependence. Superconductivity. See also. Footnotes. References. External links. Electrical resistance and conductance. The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is electrical conductance, measuring the ease with which an electric current passes.
- R
- ohm (Ω)
- kg⋅m²⋅s−3⋅A−2
Oct 26, 2023 · Light Dependent Resistors (LDRs), also known as photoresistors, are a crucial component in the world of electronic circuits. These components exhibit photoconductivity, which essentially means their resistance changes based on the intensity of light they are exposed to.
The Light Dependent Resistor (LDR) or also popularly known as Photoresistor is just another special type of Resistor and hence has no polarity so they can be connected in any direction. They are breadboard friendly and can be easily used on a perf board also.
PDF Version. Chapter 3 - Resistor Types. What are Photoresistors? Photoresistors, also known as light dependent resistors (LDR), are light sensitive devices most often used to indicate the presence or absence of light, or to measure the light intensity.
