400w Led Flood Light Manufacturer Teaches You How To Make Dimmable Led Floodlights


Led floodlights are already a very common type of light […]

Led floodlights are already a very common type of lighting, so how to turn the commonly led floodlight into dimmable, then the following 400w Led Flood light manufacturers will share the steps of specific transformation:


1. Replace the LED

After removing the floodlight, remove it from the LED driver and it has no use for this project. The glue that holds the LED driver in place is also removed. Then use an adjustable wrench and pliers to remove the waterproof seal of the wire.

Desolder the LED connection and attempt to power up using a 30-volt external power supply (this is the forward voltage). A typical 20 watt LED). But it didn't open. The LED is dead.

Remove the screw that secures it, pull out the LED and wipe off the old heat sink. A new LED will be replaced, but some new heat sink compounds will be added before it is held in place. Then align the LEDs in place and secure with screws.


2. Connect the boost converter

Now is the time for the boost converter. When you are trying to determine if a particular boost converter is right for your project, you need to consider it to calculate its input voltage, not the output voltage. In this case, the LED uses 20 watts, and if 12 volts is input to the boost converter, 20 watts divided by 12 volts is about 1.7 amps, which is within the range that the boost converter can handle.


3. Adjust the boost converter output

Before powering up, you need to check the forward voltage of the LED. Overvoltage will burn out the LED. A typical 20 watt LED typically has a forward voltage of 30 volts.

Connect 12 volts to the input of the boost converter, connect the voltmeter to the output, and turn the dimmer potentiometer (high current) to MAX (to the right). Turn the trimmer potentiometer counterclockwise (you need to turn it around) to get a voltmeter reading 30 volts because the LED used has a forward voltage of 30 volts.

By lowering the dimmer potentiometer, the output voltage of the boost converter can now be adjusted to a maximum output voltage of 30 volts to maintain the voltage within the LED range.


4. Connect everything

Solder the two terminals to the LED terminals and install the boost converter to the housing with washers and bolts. The LED leads are then connected to the output of the boost converter to ensure polarity.

Solder the two wires to the 12-volt female connector. Ensure polarity when connecting wires, which can damage the boost converter is connected in the wrong way. These wires are then connected to the input of the boost converter and the 12-volt female connector is mounted to the housing with a hole previously drilled to mount the connector.

Mount the dimmer potentiometer to the housing because the holes previously used to pass the wires of the earlier LED driver are too large. Screw everything back in place and add a knob to the dimmer potentiometer.


5. Insert the floodlight into the vehicle

Connect a 12-volt female connector to the back of a male car cigarette lighter connector to power the car's floodlights. This is optional. You can also connect some wires directly to the cigarette lighter connector. The final implementation can increase the brightness by turning the potentiometer.

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