What power supply do I need for LED lights?

What power supply do I need for LED lights?

Make sure the total wattage of your LED strip lighting is at least 20 percent less than the power supply’s rated wattage. For example, if you have an LED strip light that requires 80 watts of power to run, you’ll need a power supply that’s rated for at least 96 watts.

Do COB LEDs need drivers?

3. LED Drivers. LED drivers are the handy little boxes that take the power from your electrical outlet and convert it to a form that the COBs can use. The electricity coming from your outlet is alternating current (AC), and this does not work for COB LEDs – they require direct current (DC) instead.

What is COB LED chip?

Chip-on-Board or “COB” refers to the mounting of a bare LED chip in direct contact with a substrate (such as silicon carbide or sapphire) to produce LED arrays. Most notably, COB technology allows for a much higher packing density of the LED array, or what light engineers refer to as improved “lumen density”.

Do you need a power adapter for LED lights?

LED strips, unfortunately, are not as simple as traditional incandescent light bulbs when it comes to installation and set up. Because they run on low voltage DC, they require a power supply device that converts 120V/240V AC (depending on your location) into the voltage signal that LED strips can use.

Do LED lights use DC or AC?

In most applications, LEDs are driven by a DC power supply, but AC offers several significant advantages. Lynk Labs has developed technology that allows LEDs to be driven directly from an AC supply. LEDs are usually considered to be DC devices, operating from a few volts of direct current.

What happens when an LED is directly connected to a power supply?

When LED is connected to a power supply with a voltage higher than its forward voltage, a current limiting resistor is connected in series with the LED. The current limiting resistor limits the current for the LED and regulates the difference in voltage drops between the LED and the power supply.

Which is better COB or LED?

But the difference between LED light COB and SMD is that COB LEDs have more diodes. COB chips typically have 9 or more diodes. COB is known for better lumen-per-watt ratios and heat efficiency.

Do COB LED need heatsink?

The following are key features of COB LEDs. In the case of COB LEDs, it is possible to directly attach a COB LED to a heat sink (see Figure 2). As a result, COB LEDs do not require PCBs in order to install LEDs into a luminaire and the subsequent reflow process is no longer necessary.

Can DC LEDs run on AC?

Can a DC bulb run on AC?

For light bulbs and heating elements, both AC and DC will work as long but the fact is that though all electric devices require direct current, alternating current is what is used to deliver electricity with the help of transformers which convert AC to DC for the use of electric devices.

How are chip on board ( COB ) LEDs used?

COB LEDs are basically multiple LED chips (typically nine or more) bonded directly to a substrate by the manufacturer to form a single module. Since the individual LEDs used in a COB are chips and not traditionally packaged, the chips can be mounted such that they take up less space and the highest potential of the LED chips can be obtained.

What does cob stand for in LED lighting?

1. COB LEDs. The main component of a COB LED lighting system would obviously be the lights themselves. The term COB stands for “Chip On Board”, and refers to the fact that each unit is actually several LED (Light Emitting Diode) chips mounted together on the same substrate, which is often ceramic or metal.

Why are cob LEDs not need to be soldered?

Another aspect of COB LEDs that reduces failure rates is the fact that spot soldering of the individual LED chips is not necessary as each chip is directly mounted onto the substrate. The smaller amount of welding points results in lowering the rate of failure.

Why are cob LEDs mounted on the substrate?

In the long run, the proper heat dissipation increases efficiency and lowers failure rates. Another aspect of COB LEDs that reduces failure rates is the fact that spot soldering of the individual LED chips is not necessary as each chip is directly mounted onto the substrate.