It is the main task of electronic design engineers to save energy, which has become a common goal in most countries. This kind of environmental condition shows a huge development opportunity for LEDs, because LEDs not only have low power consumption characteristics, but also generate less heat and higher energy efficiency than traditional lighting solutions, thus driving LED lighting to accelerate. Into real life applications.
In LED-based lighting applications, effect lighting (also known as architectural lighting) is one of the fastest growing LED applications. In this field, the use of RGBLED to achieve rich lighting color has become the mainstream.
In the RGB LED used in effect lighting, each LED contains three wafers, which are red, green and blue. Another way to produce different color lights is to use monochromatic red, green, and blue LEDs that are mixed by their respective optical components to produce light.
The LED driver and the microcontroller mainly control the color emitted by the LED module by adjusting the power. Thanks to advances in semiconductor technology, many low-cost, high-performance LED drivers are now available. For example, Infineon's BCR40x series of high-side linear LED drivers can be used to precisely control the LED color through the PWM signal generated by the microcontroller.
All BCR LED drivers have a negative temperature coefficient. When the temperature rises, the current will decrease by 0.2%/K. Due to its extremely low power consumption, this series of LED drivers can be used in many lighting fields, including architectural LED lighting; advertising font lights; decorative LED strips; retail lighting such as refrigerators and freezers; Emergency lighting (step lighting, exit signs, etc.); interior lighting such as boats, trains and airplanes.
However, current resistor bias is still a popular method for low power LEDs. Sometimes medium power LEDs will also be used. This method has great drawbacks, such as uneven light output and shortened LED life. If a switch driver is chosen, it is usually not possible to achieve the price level required for a 0.5 watt LED application, and it will also increase the number of parts and the complexity of the drive circuit.
In order to solve these problems, solutions have been developed on the market to specifically address 0.5W LED applications, such as Infineon's BCR321 and BCR421LED drivers. In addition, there are even BCR40xLED drivers for 0.1W LEDs. These small drives provide an economical and simple solution that plays a key role in driving LED lighting adoption.
In the case of high-power LEDs, switching drivers are usually used. These types of drives must have higher output currents to drive high-power LEDs efficiently. But in pursuit of high efficiency, high-power LEDs must be designed to handle overvoltage, overcurrent, and thermal issues. Therefore, it is necessary to have basic protection functions. For example, the Infineon ILD4xxx buck converter series has different output currents such as 350mA, 1,200mA, 1,800mA, as well as overvoltage, overcurrent and overheat protection. When the junction temperature reaches 125°C, the output current will be sharp. Decrease, thereby extending the life of the LED.
Dual Function Key Switches is a Key Switchesthat combines Electric Key Switch and Mechanical Key Lock, which is Simultaneously have power control and could mechanically protect the equipment from invading.
Our company's Key Lock Electrical Switches has mounting dimensions of 12mm and 19mm. This 2 Position Key Switch is widely used in the field of security products, which not only can achieve the function of switching power supply but also could protect customer`s confidential data.
Below are the specifications:
Electrical and row piece dual function
Zinc alloy die cast housing and cylinder
Barrel chrome or nickel plated standard
Lock case, white iron cover
4 disc tumbler mechanism
Brass tubular keys or Bilateral bilateral milling copper key, nickel plated
The iron bar has a standard size of 13mm or Row Piece, can be made according to customer requirements.
Key may be withdraws in one or both position aSilver terminals and Contacts.
Dual Function Key Switches
Dual Function Key Switches,Key Lock Electrical Switches,2 Position Key Switch,Momentary Key Switches
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