Constant Current Led Driver Vs Constant Voltage Driver

Constant voltage led drivers are designed to operate at a single constant output voltage.

Constant current led driver vs constant voltage driver.

Constant voltage drivers are designated for a single direct current dc output voltage usually 12vdc or 24vdc. Amperor s constant voltage and constant current led driver family while there are always exceptions to every rule we have determined that the sign industry employs more constant voltage drivers and the lighting industry utilizes more constant current drivers. For my circuit i want to use 110vac mains power via a triac dimmer to an led driver power supply. The output of the led drive power supply is mostly a constant current source that can change the voltage with the change of the led forward voltage drop value.

For this use case i am confused on whether to use a constant voltage ac to dc led driver power supply or a constant current ac to dc led driver power supply. The driver receives a standard voltage around 120 277 volts typically found in residential receptacles outlet. Constant voltage drivers are designed for a single direct current dc output voltage. Since leds are semi conductors and operate a little differently than most basic circuits it s far easier to simply drive them at their rated current with a constant current driver than it is to try and produce that current by providing a constant voltage.

The voltage range and current value of the constant current led drivers are located on the driver. Most common constant voltage drivers or power supplies are 12vdc or 24vdc. An led light that is rated for constant voltage usually specifies the amount of input voltage it needs to operate correctly. An led light rated for a constant voltage requires a consistent amount of output voltage to ensure a proper operation.