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The difference between the power adapter and LED drive power supply _

by:Fuyuang     2020-12-29
The difference between the power adapter and LED drive power supply of 2020-160 12 - 03 14:41:57 in simple terms, the power adapter contains the LED driver, LED is belong to the category of power adapter, this is their relationship and differences, the following details for you the difference between the two: 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, also known as constant current source; But there are also LED is powered with the regulated power supply, such as power adapter. LED driver power supply 1, constant current power supply driver: 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, the LED can Lantern Festival and the LED brightness equalization ways, constant current source driving leds it is the most ideal way. 2, regulated power supply drive: refers to the use of regulated power supply, If the power adapter) For the LED power supply, regulated power supply is when each parameter is determined, the output voltage is fixed on a scale, and the output current is 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 under the condition of using multiple lamp bead, using a regulated power supply drive less because the lamp series, the more the resistance of the cases with the more it will loss more additional current, in the case of lamp bead amount is not a lot of the use of more. The ac adapter power adapter ( 电源适配器) A small portable electronic devices and electronic power supply power transformation equipment, generally composed of shell, power supply transformer and rectifier circuit, according to its output type can be divided into the ac and dc output; According to the connection mode can be divided into the plug wall and desktop type;
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