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How much power does a 5V LED strip need?
I know that, at full brightness, each LED requires 60mA. So, at 30LEDs/m, that is 1.8A/m, or (5V x 1.8A =) 9W/m. I will be using 13m, and so I need a (13*9W=) 117W power supply that can provide 23.4A at 5V. My question is this. Can I use a 12V 10A (=120W) power supply, and 5 LM1084 voltage regulators in parallel to covert the 12V to 5V?
How to choose a power supply for your LED strip project?
Most LED strips will have a mark showing 12V or 24V. Now, check if the voltage on the power supply specifications matches the LED strip. In this case, the power supply is also 12V, so we are good to go. Also confirm that the input voltage on the AC side matches your country’s voltage (120V for North America, etc).
How many Watts Does a LED strip draw?
In electrical terms, we now know that at 12V, this LED strip will draw about 24 Watts per reel (5 meters), or about 2.0 Amps. Now, let’s check the power supply. We see that it has a rating of 36W, or 3A. Again, if we use the formula P = V x A, this checks out, because it is a 12V power supply.
What kind of DC does an LED strip use?
The first step is to figure out what the voltage of the LED strip is. The majority of LED strips available on the market run at 12V DC. Others are primarily at 24V DC. If you still aren’t sure, another way to confirm this is to look at the product photo. Most LED strips will have a mark showing 12V or 24V.
How to connect 12V RGB LED to Arduino?
Connect the Ground of 12V power supply to the Ground of Arduino. Connect the positive terminal of 12V power supply to the 12V pin of RGB LED strip. Connect 1 K resistor to the base of the each transistors as shown. Connect wires form the digital pins D9, D10, D11 to the other end of the resistors as shown in the circuit diagram.
How to connect 12V power supply to Arduino?
Connect the emitter of all the transistors to the Ground of Arduino. Connect the Ground of 12V power supply to the Ground of Arduino. Connect the positive terminal of 12V power supply to the 12V pin of RGB LED strip. Connect 1 K resistor to the base of the each transistors as shown.
Where are the resistors on a RGB strip?
Connect 1 K resistor to the base of the each transistors as shown. Connect wires form the digital pins D9, D10, D11 to the other end of the resistors as shown in the circuit diagram. Finally connect wires from the R, G and B terminals of the RGB LED strip to the collector (middle pin) if the TIP120 transistors as shown.