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What the difference between LED drive power supply and power adapter

Writer:www.turnmax-tech.comSource:东莞市腾茂电子有限公司 Date:2016-10-28

Generally refers to the power adapter we regulated power supply, we often speak of the LED drive power supply generally refers to the constant current power supply is also called the constant current source, but also have the LED is powered with the regulated power supply, such as power adapter.

First we have to analyze the LED drive mode it is divided into constant current power driver and regulated power supply.
 
Constant current power supply drive refers to using the constant current power supply for power supply, LED constant current power supply output current is constant, the dc voltage output can follow the change of the load resistance changes within a certain range, load resistance is small, the output voltage is low, the greater the load resistance, the higher the output voltage. LED constant current power supply carries power is fixed, such as 10 w leds is to use 10 w constant current source, can in LED Lantern Festival and the LED brightness is balanced in terms of constant current source driving leds it is the most ideal way.
 
Regulated power supply drive refers to the use of regulated power supply, such as the power adapter) for the LED power supply, regulated power supply is when each parameter is determined, the output voltage is within the scope of a fixed, while the current output changes with the size of the load. With voltage drive power drive LED, each string of need and the resistance of the right to can make the LED display brightness average per bunch, such as resistance or have LED lights in each LED lamp bead bead current changes in brightness change happens, often use more lights, using less regulated power supply driver because in the case of the more LED twinkle light plus resistance is, the more it will loss more additional current. In the case of lamp bead amount is not a lot of the use of more.
 
Power adapter and LED drive power supply without obvious bounds, LED drive power difference between the LED lamp bead is voltage driver or constant current driver. The power adapter to power supply.
 

TypeInfo: Corporate News

Keywords for the information:怎样区别LED驱动电源和电源适配器