Mike Dolt Enterprises
Mike Dolt Enterprises
User: sfav8r, Location: San Francisco Bay Area
Asked on: Thursday, March 31, 2011 at 5:20 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:34 am EDT
Question: OK, what is the difference between an LED Driver and a power supply? I'm currently working with a "constant voltage" LED driver that connects to a dimming module. The dimming module wants a constant 8v input which the LED driver provides. I don't see why I need a $200 LED driver that just sits there putting out a constant 8v with a 40w rating when I can get a really good "power supply" for $50.I've asked the manufacturer who doesn't have a good technical explanation. They just say using anyone elses supply will void the warranty. Does anyone know why this should or shouldn't work?
LED Driver vs. Power Supply LED Driver
Specifically designed to power LEDs. Provides constant current or constant voltage, ensuring LEDs receive the correct power. May include additional features like dimming, protection circuits, and remote control.
Power Supply
Generic device that provides electrical power to various devices, including LEDs. Typically provides constant voltage without any additional features.
In Your Case
You're using a constant voltage LED driver that provides a constant 8V output. This is what the dimming module requires. A power supply could theoretically provide the same constant 8V output.
However, there are potential issues with using a power supply instead of an LED driver
Design Compatibility
LED drivers are specifically designed to interface with LEDs, ensuring proper power and protection. Power supplies may not be optimized for LED operation.
Dimming Capabilities
Some LED drivers support dimming, while power supplies may not. If you need to dim the LEDs, a dedicated LED driver is necessary.
Protection Features
LED drivers typically include protection circuits to prevent over-voltage, over-current, and other potential damage to the LEDs. Power supplies may lack these features.
Manufacturer Warranty
Using a third-party power supply may void the warranty on your LED driver and the dimming module.
Recommendation:
While using a power supply to power your LEDs may work in some cases, it's generally not recommended for the following reasons: Potential for improper operation or damage to LEDs Loss of dimming functionality Manufacturer warranty issuesIf you need a constant 8V power source for your LED application, it's advisable to use a dedicated LED driver that provides the necessary features and protection for optimal performance and reliability. Flag for review