The first one is because LED Can only operates between 12V-24V low voltage direct current electricity. So a LED driver needed to rectify higher voltages, alternate current to low voltage, direct current.
The second reason is because of protect LEDs from voltages and current fluctuations.
Four our household led product we often have internal driver for them cause this makes replacing old incandescent or CFL bulbs easier.While Commercial Lighting we usually have External Driver cause changing a led driver is much cheaper and easier than to replace the LED.
The higher temperature your LEDs works at the shorter life it will be, so When an LED stops operating before the end of its rated lifetime, it can usually be saved if the driver is replaced
Contact Current Driver requires a fixed output current and a range of output voltages.
Constant-voltage drivers power LEDs that require a fixed output voltage with a maximum output current.
AC LED drivers are actually no-minimum load transformers, meaning they could technically operate low-voltage halogen or incandescent bulbs as well. LEDs, however, cannot operate with conventional transformers because conventional transformers were not made to detect the low wattage of LEDs. In other words, LEDs have such a small electrical load that regular transformers do not register that they’re wired to a bulb at all. AC LED drivers are typically used with bulbs that already contain an internal driver that converts the current from AC to DC, so an AC LED driver’s job is to register the low wattage of LEDs and step down the voltage to meet the bulb’s voltage requirements, usually 12 or 24 volts
LED drivers should be paired with LEDs that use 20% less than their maximum rated wattage
A dimmable Driver in most additions is very important to consider.
The efficient PF is very appreciated.
UL Class 2 drivers comply with standard UL1310, meaning output is considered safe to contact and no major safety protection is required at the LED / luminaire level. There is no risk of fire or electric shock. These drivers operate using less than 60 volts in dry applications, 30 volts in wet applications, less than 5 amps, and less than 100 watts. However, these limitations pose restrictions on the number of LEDs a Class 2 driver can operate.
UL Class 1 drivers have output ranges outside UL Class 2 designations. An LED Driver with a UL Class 1 rating has a high-voltage output and safety protection is required within the fixture. A Class 1 driver can accommodate more LEDs, making it more efficient than a Class 2 driver.
Make sure the LED Driver can fit your fixture perfectly.
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