What Is An LED Power Supply?

An LED power supply is a type of power supply that provides power to electronic devices and is also known as a power supply. It converts alternating current (AC) into direct current (DC) through a transformer and rectifier. This device is called a rectifier power supply, also known as a driver power supply. Electronic devices that can provide signals are called signal sources. Lithium batteries, dry cell batteries, rectifier power supplies, and signal sources are sometimes also called power supplies. Batteries have positive and negative terminals.
A generator can convert mechanical energy, chemical energy, and other energy into electrical energy, while a dry cell battery can convert chemical energy into electrical energy.
A battery itself does not carry electricity. Instead, its poles have positive and negative charges, which generate voltage (current is the directional movement of charge under the influence of voltage). Charges are conductive ions that are widely present in conductors. To generate current, simply applying a voltage is sufficient.
When the battery's poles are connected to a conductor, the charge is released to generate current. When the charge dissipates, a dry cell battery, for example, is called a power supply. A device that converts AC to DC through a transformer and rectifier is called a rectifier power supply. Electronic devices that can provide signals are called signal sources.
LED power supplies are constant current sources, while general switching power supplies are constant voltage sources. Working Principle: LEDs have two requirements for power supply: first, the output voltage must be greater than the LED's on-state voltage, and second, the operating current must be stable and must not exceed the LED's rated current. If the operating current of an LED exceeds the rated current, the LED will quickly age and damage. Therefore, the power supply used for LEDs must have a constant current function.