φ3mm LDR CDS light sensor Photoresistor photosensitive resistance MJ3516 MJ3517 MJ3528 MJ3537 MJ3539 MJ3549

Product Overview

(1)  Usage: According to the principle of photoelectric control, it automatically controls the working status of the product with changes in external light.

(2) Performance: A. Epoxy resin; B. Fast reaction speed;

C. High sensitivity; D. Small volume;

E. Good reliability; F. Good spectral characteristics.

(3)  Main material composition: CdS CdSe, epoxy resin, ceramic substrate, tinned copper wire.

Application scope

Camera, automatic metering, photoelectric control, indoor light control,

alarm industrial control, light control switch, light control lamp, electronic toy.

Structural dimension diagram (unit: mm)

Specifications and models

Illumination characteristic diagram

Main characteristic curvature

Introduction:

CDS sensor, light sensor, and LDR sensor are designed to detect light levels and are often used in applications where automatic control of lighting or other functions is required.

What is a CDS sensor?

A CDS sensor, or cadmium sulfide sensor, is a type of light sensor that operates based on the principle of photoconductivity. When light hits the sensor, the resistance of the cadmium sulfide material decreases, allowing current to flow through the sensor. This change in resistance can be measured and used to determine the intensity of light hitting the sensor.

What is a light sensor?

A light sensor is a broad term used to describe any sensor that is designed to detect light levels. Light sensors can come in many different forms, including photodiodes, phototransistors, and photovoltaic cells. These sensors work by converting light energy into an electrical signal that can be measured and used to control various functions.

What is an LDR sensor?

An LDR sensor, or light-dependent resistor sensor, is a specific type of light sensor that operates based on the principle of photoresistivity. When light hits the sensor, the resistance of the material changes, allowing current to flow through the sensor. This change in resistance can be measured and used to determine the intensity of light hitting the sensor.

Applications of CDS sensors, light sensors, and LDR sensors:

CDS sensors, light sensors, and LDR sensors are commonly used in a wide range of applications, including automatic lighting controls, security systems, and electronic devices. These sensors can be used to detect changes in ambient light levels and trigger actions such as turning on lights, adjusting screen brightness, or activating alarms.

Benefits of using CDS sensors, light sensors, and LDR sensors:

One of the main benefits of using CDS sensors, light sensors, and LDR sensors is their ability to provide automatic control based on changes in light levels. This can help to improve energy efficiency, enhance security, and create a more comfortable environment for users. Additionally, these sensors are relatively inexpensive and easy to integrate into electronic devices, making them a popular choice for many applications.

Conclusion:

In conclusion, CDS sensors, light sensors, and LDR sensors are all types of sensors that are designed to detect light levels and provide automatic control based on changes in ambient light. These sensors are commonly used in a variety of applications and offer benefits such as energy efficiency, security, and ease of integration. By understanding the differences between these sensors and their applications, designers and engineers can choose the right sensor for their specific needs.