Technical
How to Judge the Acceptance of PCB Quality
Which Color Circuit Board Sells the Most Expensive
Method to Solve the Noise Interference of Power Supply on High-frequency PCB Board
Disassembly Skills of Chip Components on PCB
What Factors Should Be Considered in the Selection of High-frequency PCB CCL
How to Place Special Components during PCB Layout
What Are the Functions of Capacitors in Circuits?
Testing Techniques for Common Electronics Components
What to do if There is a Short Circuit on the PCB
Desoldering Principles and knowhow during PCBA Processing
Black Oxidation of the Inner Layer of the Multilayer PCB
How to Ensure the High-performance Design of PCB
What Is the Printing Process of SMT Solder Paste?
PCB without fiducial mark, Is There Any Way to do SMT for It
What Are the Benefits of Reserving Break-up Tab for PCB Production
How Does SMT Affect PCB Production Time and Speed It Up
Classification of PCBs from three aspects
Common Problems and Solutions for Dry Film pasting during PCB Manufacturing process
Several Elements to Inspect after PCB Design
What is a halogen-free circuit board?
What Do Capacitive Coupling and Decoupling Mean?
What Are the Differences Between PCB Paste Mask and Solder Mask?
How PCBA Is Packaged and Shipped
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What Are the Differences and Relations Between PCB, PCBA, and SMT?
PCB Baking Specifications
PCB "Solder Mask Tenting" and "Solder Mask Opening"
Five reasons for PCB deformation and six solutions
Importance of first article inspection of PCBA board
Temperature zone standard for SMT reflow soldering
Small and medium volume PCB manufacturers in China
The main reason for PCBA cleaning
For power filter, the more capacitors, the better?
What does PCBA programming mean?
Content of PCB incoming testing
What conditions must be met for PCB circuit board soldering?
What is Blind via and Buried via
PCBA Manufacturers Temperature and Humidity Sensitive Components Management
Why choose Shenzhen SMT processing factory?
How long does it take to calculate the quotation for PCBA manufacturing?
Introduction of PCB design clearance requirements
Explanation of BOM, DIP, SMT, SMD
Introduction of the process of PCBA prototype
How to prevent pseudo soldering or cold soldering defects in PCBA manufacturing?
Factors that affect the Price of FPCB
What information is required for SMT processing at PCBA factory?
Skills of using 0ohm resistor in PCB design
How to select a PCBA manufacturer
SMT processing solder joint quality inspection
Characteristics difference between immersion gold PCB and gold plating PCB
Common malfunctions of Circuit Board Caused by Moisture
A Few Rules about PCB Panelization
Compare of multi-layer PCB with single/double layer PCB
Why do we need to introduce so many subdivided GND
Difference between immersion gold boards and gold plating boards
Aluminum PCB structure
Classification of different GND in circuit
Why PCB baking is necessary during manufacturing process
The handle and precautions of OSP board in SMT process
How to choose capacitors for filter decoupling
How to choose filter capacitor for switching power supply
5 database need for SMT process
Function of three-terminal capacitor
Introduction of PCB OSP surface treatment
Method of inspecting the quality of SMT by step
How to find the short point between VCC and GND
Difference between 850nm and 940nm infrared LED
Component layout of PCB SMT DFM
Pad shape influence on the strength and reliability of the soldering joints
The difference between high temperature solder paste and low temperature solder paste
Introduction to manual welding processing
Manual visual inspection in PCBA processing
Characteristics of the conformal coating process
Difference between hardware engineers and software engineers
PCBA processing operation rules
China PCB upstream materials has continued to soar
Difference between serial buses and parallel buses
The key points of quality control in PCBA processing
Common causes of solder beading during SMT process
Analysis of the advantages and disadvantages of HASL PCB surface
Requirements for layout of components during SMT assembly
Selection of electronic components and CCL for PCBA
Performance and appearance quality inspection of components.
Quality and Reliability of SMT Chip Processing and Production
Coupling and decoupling function of capacitor
Two methods to connect digital ground and analog ground
Common sense in SMT process

Explains and prospects of application LED in greenhouse plant

LED is an eye-catching light source in the 21st century, and it has broad prospects. China LED PCB provider first briefly introduces the development of LED, then analyzes its basic principles, explains the feasibility of using LED as a lighting source for horticulture plant, and finally explains and prospects the market application of LED in greenhouse plant.

The life activities of plants are inseparable from the light, but because of the cover of agricultural film or glass, the light transmittance in the shed is affected, especially if the continuous cloudy day lacks light, it can lead to the decline of photosynthesis. There are two ways to regulate the light environment in the production of greenhouse plants: one is to adjust natural light by hanging reflective curtains, the other is to  select plastic films or glass panels for greenhouse covering materials.

In the field of develop and research for plant-specific LED light source, China has successfully developed a "flexible LED light source system for plant photobiology ", which was named “LEDPlant” and has been successfully applied to the 863 project undertaken by the research team in the experimental study. This is a new type of plant growth supplement light. After application tests, the wavelength of the plant light is very suitable for plant growth, flowering, and fruit. The plant growth light is the world's leading high-precision technology that uses semiconductor lighting principles and is dedicated to the production of flowers and vegetables products, General indoor plants and flowers, always grow worse as time goes on, the main reason is the lack of light irradiation, through the LED lamp suitable for the required spectrum of plants, not only can promote their growth, but also can prolong the flowering period and improve the quality of the flowers,on the one hand, can solve the disadvantages of insufficient sunlight leading to the decline in the taste of greenhouse vegetables such as tomatoes and cucumbers, and on the other hand, it can advance the winter solanum and fruit vegetables to the Spring Festival Before, so as to achieve the off-season cultivation.

After doing detailed research and reading some academic papers, it is proved that LEDs are effective. Generally, LED plant lights emit red and blue light, which are mostly red and then blue, because the photosynthesis of plants is most sensitive to red and blue light. Red light absorbs more, blue light absorbs less. Red light generally promotes the growth of leaves and blue light promotes its blossom. LED lights rely on controlling the ratio of the number of red and blue lamp beads to accurately determine the ratio of red and blue. At present the red-to-blue ratio of LED plant lights on the market ranges from 3:1 to 8:1, and you can also choose to customize. According to the relevant academic papers, the ratio of red to blue light is between 5:1 and 10:1. According to the some seller, they specialize in exporting LED plant lights to the United States. We also investigated and found that there are indeed LED plant lights on eBay that are the same as the domestic seller.