Can 12V LED Run On 18V?

Can 12V LED Run On 18V?

This is a very common question that we’ve seen in the forums like quora and we did not see any content that clearly answers the question, and therefore we thought to write about it with every single thing you need to know. So stick around until the end to find out what you’ve been looking for. Welcome to RLC Talk. 

Can a 12V LED run on 18 V?

You know when the voltage is way higher than the required voltage, the LED may be fused quickly and you will not be able to use it for a long time. 

But with some tools or tricks, you can use 18V for a 12v LED easily. There are two main ways of doing this, and you can use any of those methods depending on the tools you’ve already got. So the following are those two methods. 

  • Using an 18v to 12v resistor. 

Six volts must be reduced from 18 volts to 12 volts. We have 90 times 150 mA of current. This adds up to a strong 13.5 amps. (!) Thus, 81 watts will be consumed by the resistor (This is a VERY hefty resistor.) 6 volts / 13.5 amps =.44 ohms is the R-value.

Keep in mind that you are WASTING a full third of the power your battery pack is delivering. Really, do you want to do that?

Using a switching power supply to lower the voltage with significantly less loss might be a better idea.

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  • Using  DC/DC converter. 

Purchase a DC/DC converter with input/output voltage ranges that fall within your input/output voltage that is rated for more than 13.5 A (your current draw). Battery and DC/DC converter connected. Set the output voltage to 12 volts (there is typically a small screw to adjust it; use a multimeter to measure it). The output can then be connected to the LED panel.

Can a 12V LED handle 24V?

The voltage difference for a 12V LED strip only needs to be 12V for it to function as intended. Clearly, if 24V is simply connected to the copper pads of a 12V LED strip, the LEDs will burn out from the excess voltage.

How many volts will burn out an LED?

This is demonstrated by using a voltmeter to measure the output of a wall adapter; due to manufacturing variation, the actual output could fall anywhere within this range. Thus, the safe operating range for these LEDs is between 4.5 and 5.5 volts, with 6 volts being the “rated absolute maximum.” Any higher and they’ll quickly tire out.

But as the LED requires only 12v to perform well, then even 1v higher than that will lead to reducing the lifespan of the bulb. So you have to choose the supplies carefully after testing them with a good multimeter. 

Can 12V LED Run On 18V?
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Now you know how to do it and now it is the time to discuss some important points related. So here comes the first problem, 

How much power does a 12-volt LED light use?

Depending on the color and LED. A single LED can turn on with a forward voltage of between 1.3 and 3 VDC and a current of about 20 ma (or.02 amps). Many 12-volt LEDs are COBs (Chip-on-Board), which are sealed after being connected in series. 

Only LEDs in series make up some 12-volt LEDs (connected one after another ). LEDs are turned on by voltage and amps and power, or watts. 1.3v times.02 equals.026 watts.

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How long can a LED hold when there is high voltage than required?

To put it simply, too much voltage destroys the LED. LEDs are current-driven devices, not voltage-driven ones, as was already mentioned. 

Therefore, the LED bulb is fused off if the voltage fluctuates by more than 10%. The voltage spike then causes damage to the LED bulb’s electronic components. LED drivers and distribution panels deteriorate prematurely under excessive voltage. Additionally, it causes more LED lighting service interruptions.

LEDs have a lot of power. The more voltage you increase, the more heat they’ll produce, which is not good. The LED produces fewer lights and has a shorter lifetime when it is overheated. A dysfunctional LED system is closely related to reduced light.

What happens to an LED if you exceed the maximum current?

Amperage is referred to as “current”. Since the device drawing the current determines the flow of current, an LED cannot draw more current than is necessary to illuminate. It will, however, burn up like any other load if you attempt to apply too much voltage to it. 

Consider your car as an example. Tiny LEDs are used to illuminate the dash, and they are connected to the same power source as the starter with no voltage drop. The starter uses about 300 amps when you turn the key (or push the button), depending on the size of your engine.

The heater fan draws about 10 amps, the LEDs in your dash draw less than half an amp of current, and the battery can deliver up to 800/900 amps—all at just 12 volts. The device’s design determines how much current it can draw; it is unable to draw more than what is necessary for it to operate.

Why 12v LED systems are better?

The risk of electric shock is lower with 12V LED systems. Safety concerns for LED products frequently include optical, shock, and fire risks. The built-in resistance of human skin and other objects is more challenging for the electrical current to overcome because 12V is much lower than line voltage (120/240V).

In addition to the LED chips, a line voltage LED product must also include complex electronics, such as capacitors, that convert AC line voltage into DC so that it can be used by the LEDs. 12V LED systems are more dependable and repairable.

The transformer and power supply are typically placed away from the LEDs in a cool, ventilated area in 12V LED systems. This increases the electronics’ dependability and, more importantly, makes it simple to replace or repair damaged electronics.

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Some related FAQs.

Can LED run on any voltage?

A particular voltage, such as 24 or 12V, is needed for LED lights. They get very hot when operating at higher voltages. The LED lights or the soldering around them are harmed by intense heat. Heat damage causes LED lights to dim, flicker, or even go out completely.

What is the minimum voltage for LED?

It depends on the color and type of the LED and is typically between 2 and 3 volts.

Do I need a resistor for LED?

Always use a current-limiting resistor when connecting an LED to prevent damage from excessive voltage. The LED will be over-driven, over-bright for a while, and then burn out if you connect it directly to 5 volts without a resistor. That is what is said.

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