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The BrightON, Principal, Sloan LED Shootout


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So….What makes the High-End BrightON LED Series Kick Ass?

 

Well.....we'll show you!

 

Let’s go over a few quick specs first and how they differ from a few of the major brands out on the market right now. 

 

For this purpose we compared the BrightON II to Principal’s Qwik Mod2, and Sloan LED’s Value Line 4, or VL4 as most know it as.

 

The Shoot Out

Sloan LED Value Line 4 (Left), Principal LED Qwik Mod (Center), BrightON II LED (Right)

IMG_0236.jpeg

 

 

The Benchmark Comparison Details

 

Each Channel is 24” L x 4.25” W x 5” Deep.  Why 4.25” Width?  Well, because the standard told you that each stroke of Neon should hold for 4”, at 6” or 8” you would add another.  The acrylic face is just a simple 1/8” #7328 MC White.  The module spacing for all modules is also the same at 6.5” OC

 

B-vs-P-vs-S-Exposed.jpg

 

 

The first thing you should know is that the BrightON II is Constant Current Module, NOT Constant Voltage.  Both the Qwik Mod2 and VLT 4 are Constant Voltage.  We’ll get back to this part in a bit, and maybe we will follow through in a separate article when it comes to CC vs CV and what the pro’s and con’s are.

 

The BrightON II uses 18AWG for the module system wiring, the Qwik Mod2 and VL4 both use 20 AWG, so they will both incur some voltage loss in longer string strands, especially if it's s shop who likes to load 30 to 50 modules on a single string, this 20 AWG wiring doesn’t not help a Constant Voltage LED System, this works against it.

 

The BrightON II is 24V, the Principal LED Qwik Mod 2, and Sloan VL4 LED modules are 12V.  With 24V you have half the current flowing across the system, which in turn means less heat and resistance than a 12V system.  This also means, longer life.

 

The BrightON II is .8 watts per module, the Qwik Mod 2 is also .8 watts per module, the Sloan VL4 however is a higher wattage module at .96 watts.  Usually higher wattage means higher light output.

 

 

The Surface Lighting Results

B-vs-P-vs-S-Faces-2.jpg

 

Since we’re in America, we’re using Foot Candles to measure Light Output, in a measured off area on each acrylic face (6” x 4.25”) we use an ExTech Light meter to measure the High and Lows, just like we have done in all past Benchmark Lighting Comparisons such as The Great White Hope, The Red Light District, & Blue Light Special.   We add both measurement (High's & Low's) numbers together and divide by 2.  i.e. FC High of 232 + FC Low of 226 = 458 FC.  458 FC / 2 = 229 FC, or 229 Foot Candle Average.

 

As you can see, for the same power modules, the BrightON II is 29% brighter on the sign surface (Luminance), and 17% brighter than the higher wattage Sloan VL4.

 

Lastly, let’s look at the Foot Candles Per Watt.

 

This is the amount of light per watt on the acrylic or sign face surface.  This illustrates the efficiency of each module, or light output per water being consumed.  Depending on the quality of the chip, some will produce more light than others consuming the same amount of power.  The BrightON far exceeds the Principal Qwik Mod 2, and the Sloan Value Line 4 in light efficiency.

 

 

Constant Voltage

Now let's talk about the Constant Voltage LED System and how it affects Sign Applications and Projects.  

 

CV LED modules only use Resistors to protect the system, this is minimal.  Sometimes LED Power Supplies can kill these Systems especially when not loaded right.  A lot of LED PSU's (LED Power Supply Units) vary in the voltage out, or secondary.  Some Secondaries can output about 12.15 to 12.24, sometimes slightly higher.  That fraction of a volt makes the LEDs run hotter and the brightness of the LED goes up beyond the intended purpose.  Also, if you light a string of say 25 LEDs, the first module takes a bigger hit than the last LED module on the string, also the light output of the first module is brighter than the last.  You will have inconsistent lighting of LED modules on long strings when it comes to CV Modules.  Fractions of a volt dim the LED modules from string to string or Jump to jump.

 

 

 

Simulation

 

Qwik Mods.jpeg

 

 

 

We simulated this small sign using 18 AWG wiring hooked up to measured LED Strings.  We took a 12V PSU and hooked it up to three groups of LED Strings with Similar Loads to represent individual channel letters

 

I also drew up a illustration to show you what we did for our benchmark test, and what his benchmark is representing.

 

 

Constant voltage illustration.jpg

 

If you look at PSU 1, you'll notice that like most of how these signs are installed, the PSU goes to the first two letters of a group we'll call Jump 1, which is about 5' to 6' secondary cable length coming  from the LED PSU, and extension or jumper to the second group also 6' cable length, and to the third also 6' from Jump 2.  We took a volt meter and measured what the voltage was at each jump point.  Keep in mind, this much smaller than how signs are installed in the field, the secondary wiring used to crimp led string in letters then to jump points ins much longer as we all know, jumps are also much longer.  But this is a simple bench mark, we're not going extreme.

 

Jump 1 Voltage Measurements 11.89 Volts

12V Jump 1.jpeg

 

 

Jump 2 Voltage Measurements 11.66 Volts

12V Jump 2.jpeg

 

 

Jump 3 Voltage Measurements 11.62 Volts

12V Jump 3.jpeg

 

 

So, now that we have our voltage measurements of each jump, we'll use those voltage numbers to illuminate a channel to show you how the light output is affected using by the voltage drops on a CV system.

 

We used a LED power Supply where we control the voltage, also using a ExTech Light meter.

 

Jump 1 @ 11.89 Volts = 240 Foot Candles 

12V Face Jump 1.jpeg

 

 

 

Jump 2 @ 11.66 Volts = 226 Foot Candles

12V Face Jump 2.jpeg

 

 

 

Jump 3 @ 11.62 Volts = 224 Foot Candles

12V Face Jump 3jpeg.jpeg

 

 

 

Like I said, this is a smaller version than what can happen in the field of installation where there is longer runs and jumps of secondary cable.  It's common to see 11volts at some points or jumps.  If we take this power supply down to simulate 11 volts, the light output drops to 190 Foot Candles.  11 Volts.jpeg

 

 

 

Now let's go the other way, let's go 12.24 Volts.  260 Foot candles, and climbs with each fraction of a volt up.  Not good for LED Modules

 

12-25V.jpeg

 

 

 

Constant Current

 

With Constant Current LED systems, each module has a current regulated by having an on board CR Chip.  What this does is govern the current, in short....it's extra protection.  How it differs is, unlike CV LEDs, where the last LED module on a string of 25 will be just as bright as the first module on that string.  Also, going over the intended voltage will not affect the light output or life that it will with CV LED.  CC LEDs assure consistent brightness throughout your sign, and longer life than a CV LED Module where they can be overdriven

 

Let's show you the second part to this illustration and benchmark

 

The 24V BrightON II Content Current LED Module Simulation

 

BrightON Mods.jpeg

 

Jump 1 Voltage Measurement 23.95 Volts

 

24V Jump 1.jpeg

 

Jump 2 Voltage Measurement 23.82 Volts

24V Jump 2.jpeg

 

 

Jump 3 Voltage Measurements 23.82 Volts (No Change)

24V Jump 3.jpeg

 

 

Now for the light output

 

 

 

 

Jump 1 @ 23.94 Volts = 334 Foot Candles

24V Face Jump 1.jpeg

 

 

 

Since Jump 2 & 3 voltage measurements @ 23.82 Volts the light output is the same at 333 Foot Candles

24V Face Jump 2 & 3.jpeg

 

 

The drop in light was so minimal with a fraction of a volt it took us going down to 22.5 volts to see any kind of significant drop in light.

22-5V.jpeg

 

 

Let's go the other way and drive the string to 27 volts.  No affect on light output

27V.jpeg

 

 

There has been a lot of questions about CC and CV LEDs in our industry and how it affects signs in the field, so I hope this answers some of those questions.

 

This is why the High-End BrightON LED Line really KICK ASS!  The complete LED line is Constant Current, both 24V & 12V Modules, The BrightON II, IV, and SunFire are all 24V.  24V allows users to load more LEDs on a single channel / PSU Unite to 96Watts over a 60W Channel / PSU.  You also have half the Current, Resistance & Heat of that of a 12V system.  

 

As you can see from the comparison above, you get more light for the same power as other LED manufacturers and at times higher wattage modules.  That's Efficiency!

The BrightON LED line is also very Under Driven, where as there drive theirs to peak to achieve certain light output, and this will lessen LED Module Life.

 

 

BrightON II Label copy.jpg

 

 

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