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What is the purpose of a ldr?

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Anonymous

12y ago
Updated: 8/19/2019

"LDR" is a "light-dependant resistor". Its resistance at any moment depends on the

intensity of the illumination in which it is bathed at that moment. In combination

with a few additional components, it can be used to detect the intensity of the

illumination falling on it, and report remotely or control other devices accordingly,

as the designer has arranged the circuit. If its response to changes in illumination

is sufficiently rapid, it can even be used to detect and reproduce audio that is

impressed on a light beam in the form of amplitude modulation, and in that way

act as a vital component in a system of light-wave communication.

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12y ago

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What is an LDR symbol?

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What does LDR stand for?

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What is the symbol for LDR Holding Corporation in NASDAQ?

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What does a LDR sense?

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As the light intensity increases, the resistance of an LDR (Light Dependent Resistor) decreases. This means that the LDR becomes more conductive and allows more current to flow through it. Conversely, when the light intensity decreases, the resistance of the LDR increases, reducing the current flowing through it.


What will the decrease of the light intensity on an LDR do to the ammeter reading?

The decrease of light intensity on an LDR will cause the resistance of the LDR to increase, which will result in a decrease in current flow through the circuit. As a result, the ammeter reading will decrease.


When light falls on ldr resistance is increasing why?

When light falls on an LDR (Light Dependent Resistor), more photons are absorbed by the semiconductor material in the LDR, causing more electron-hole pairs to be generated. This increases the conductivity of the material, resulting in a decrease in resistance. Hence, the resistance of an LDR decreases with an increase in light intensity.