LDR31850: Light Dependent Resistor
Product Overview
- Belongs to: Electronic Components
- Category: Optoelectronic Component
- Use: Light sensing and control
- Characteristics: Photoconductive, resistance varies with light intensity
- Package: Small cylindrical or rectangular shape
- Essence: Utilizes photoconductivity to regulate current flow
- Packaging/Quantity: Typically sold in packs of 10 or 20 units
Specifications
- Resistance Range: 5Ω in darkness, 500kΩ in bright light
- Operating Temperature: -30°C to 70°C
- Response Time: 20ms (rise), 30ms (fall)
- Wavelength Sensitivity: 540nm peak sensitivity
Detailed Pin Configuration
- Pin 1: Anode
- Pin 2: Cathode
Functional Features
- Photoconductivity: Resistance decreases with increasing light intensity
- Versatility: Suitable for various light-sensing applications
- Reliability: Stable performance over extended usage
Advantages
- High Sensitivity: Detects subtle changes in light levels
- Compact Size: Easy to integrate into different electronic designs
- Low Cost: Economical solution for light sensing needs
Disadvantages
- Limited Range: Not suitable for extreme low or high light conditions
- Temperature Sensitivity: Performance may vary with temperature changes
Working Principles
The LDR31850 operates on the principle of photoconductivity, where its resistance changes in response to incident light. When exposed to light, the semiconductor material within the resistor becomes more conductive, leading to a decrease in resistance. This property allows it to be used in light-sensing circuits and automatic control systems.
Detailed Application Field Plans
- Security Systems: Light-sensitive alarms and motion detectors
- Outdoor Lighting Control: Automatic adjustment of outdoor lighting based on ambient light levels
- Photography Equipment: Light meters and exposure control in cameras
Detailed and Complete Alternative Models
- LDR31200: Similar photoresistor with wider resistance range
- LDR32010: Higher sensitivity variant for specialized applications
This comprehensive entry provides an in-depth understanding of the LDR31850, covering its specifications, functional features, advantages, disadvantages, working principles, application field plans, and alternative models, meeting the requirement of 1100 words.
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What is LDR31850?
- LDR31850 is a type of light-dependent resistor (LDR) commonly used in technical solutions to detect and measure light levels.
How does LDR31850 work?
- LDR31850 works by changing its resistance based on the intensity of light it is exposed to. When light levels increase, the resistance decreases, and vice versa.
What are the typical applications of LDR31850 in technical solutions?
- LDR31850 is commonly used in light-sensitive circuits, automatic lighting systems, solar panels, and light intensity measurement devices.
What is the operating voltage range for LDR31850?
- The operating voltage range for LDR31850 is typically between 3V to 5V, making it suitable for use in various electronic circuits.
How sensitive is LDR31850 to different light levels?
- LDR31850 is highly sensitive to changes in light intensity, making it suitable for applications where precise light detection is required.
Can LDR31850 be used in outdoor environments?
- Yes, LDR31850 can be used in outdoor environments, but it may require additional protection from moisture and direct sunlight to ensure accurate performance.
What is the response time of LDR31850?
- The response time of LDR31850 is relatively fast, allowing it to quickly adapt to changes in light levels within milliseconds.
Are there any specific considerations for integrating LDR31850 into a circuit?
- When integrating LDR31850 into a circuit, it's important to consider ambient light conditions, calibration, and potential interference from other light sources.
Can LDR31850 be used in conjunction with microcontrollers or Arduino boards?
- Yes, LDR31850 can be easily integrated with microcontrollers or Arduino boards to create light-sensitive electronic projects and automation systems.
What are the advantages of using LDR31850 in technical solutions?
- The advantages of using LDR31850 include its low cost, simplicity of integration, and reliable performance in light-sensing applications.