LED power supply is a kind of power supply, it is a device that provides power to electronic equipment, and it is also a power supply. [1] It is a device that converts alternating current into direct current through a transformer and a rectifier. This device is called a rectifier power supply, also called a driving power supply. An electronic device that can provide a signal is called a signal source. Lithium batteries, dry batteries, rectified power supplies, and signal sources are sometimes called power supplies. Devices that convert other forms of energy into electrical energy are called power sources. Generators can convert mechanical energy, chemical energy, etc. into electrical energy, and dry batteries can convert chemical energy into electrical energy.
The battery itself is not charged, its two poles have positive and negative charges respectively, and the voltage is generated by the positive and negative charges (the current is formed by the directional movement of the charge under the action of the voltage), and the charge is a conductive ion that widely exists in the conductor. To generate current, you***** need to add voltage.
Working principle: LED has two requirements for power supply,******ly, output voltage > LED's on-voltage, and secondly, the working current is required to be stable and not greater than the rated current of the LED. When the operating current of the LED exceeds the rated current, the LED will quickly age and damage. Therefore, the power supply used by the LED must have a constant current function.