Constant Current Led Driver Vs Constant Voltage Driver

The voltage range and current value of the constant current led drivers are located on the driver.

Constant current led driver vs constant voltage driver.

An led light rated for a constant voltage requires a consistent amount of output voltage to ensure a proper operation. Most common constant voltage drivers or power supplies are 12vdc or 24vdc. 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 core components of led power supply include switching controller inductor switching component mosfet feedback resistor input filter device output filter device etc.

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. An led light that is rated for constant voltage usually specifies the amount of input voltage it needs to operate correctly. Constant voltage drivers are designed for a single direct current dc output voltage. The most commonly used constant voltage sources are 12 v and 24 v.

The driver receives a standard voltage around 120 277 volts typically found in residential receptacles outlet. 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. A driver marked 12 18 v 350 ma can power the led load in the range of 4 2 6 3 w. Constant voltage drivers are designated for a single direct current dc output voltage usually 12vdc or 24vdc.