LDR Testing Circuit - Simple Electronic Project

Introduction

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Diagram of LDR Working Principle

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Components Needed for this Project:

You can get the components from any of the sites below:

  1. LDR Sensor [See Buy Click Amazon]
  2. LED 5mm [See Buy Click Amazon]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

Related Basic Electronic Mini Project Circuit Diagram:

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Working Principle

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Frequently asked questions

What is LDR used for?

Photoresistors, also known as light-dependent resistors (LDR). There are light-sensitive devices most often used to indicate the presence or absence of light. or to measure the light intensity.

What does an LDR detect?

LDRs (light-dependent resistors) are used to detect light levels system. in automatic security lights. Their resistance decreases as the light intensity increases level. In the dark and at low light levels system. the resistance of an LDR is high, & little current can flow through it.

Can LDR detect color?

There are different types of electronic equipment that can be used as color sensor systems. Electronic components like LDRs and phototransistors detect light control by changing their behavior based on the intensity reflected on them.

Why is it called the LDR?

Photoresistors, also known as light-dependent resistors (LDR). are components made of semiconductors. A photoresistor is sensitive to light. Its resistance decreases when lighting increases. Photoresistors have multiple uses, for example, automatic door-opening systems.

Is LDR analog or digital?

Since an LDR is an analog component. it absorbs light and converts it into a single analog value that lies between 0-255.

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