Simply put, the power adapter contains LED driver, which belongs to the scope of power adapter. This is their relationship and difference. The following chapters describe the difference between them in detail..
Power adapter we generally refer to a stable power supply, we often refer to the constant current power supply, also known as the constant current source; but there are also LED power supply with a constant voltage power supply
In a constant current power supply, the output current remains the same regardless of changes in load resistance. This means that the power supply will adjust the output voltage accordingly to maintain a constant current. As the load resistance value changes, the output DC voltage will vary within a certain range to accommodate the new resistance and maintain the desired current.Load resistance value is small, output voltage is low, and the larger the load resistance value, the higher the output voltage. The power of constant current power supply is fixed. For example, 10W LED lamp uses 10W constant current source. In terms of energy saving and luminance balance of LED lamp, constant current source is the most ideal way to drive LED lamp.
It refers to the use of regulated power supply (such as power adapter) for LED power supply, regulated power supply refers to when the parameters are determined, the output voltage is fixed in a range, and the output current changes with the size of the load. The LED is driven by a voltage-stabilized power supply. Each series needs to be properly resisted in order to make the brightness of each series of LED display average. For example, when the resistance or the current of each series of LED beads changes, the brightness will change. In the case of using more beads, the use of voltage-stabilized power supply is less because the more the series of lights, the more the case is, the more the brightness will change. The more resistance on the lamp, the more additional current will be lost, and more light beads will be used when the number of light beads is not very large.
A power adapter can have both constant current and constant voltage output capabilities, depending on the specific application. It provides a stable power supply and can be used for various devices that require different voltage and current levels.
To summarize, the main difference between a power adapter and an LED driver is that a power adapter is a power supply conversion device for small portable electronic devices and electronic appliances, while an LED driver specifically refers to the power supply for driving LED lights.
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