Mean Well power supplies

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Mattslights

New elf
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Aug 31, 2020
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Hi guys,

Does anyone have an suggestions on where I can buy some 5v Mean Well power supplies?
 
If you have not yet, check Amazon. As odd as it may seem Amazon does have a number of Meanwell supplies. If you have an idea of power/amperage requirements you can also look at other wattage sizes. For example, I just purchased a pair of RSP-500-12 supplies; better watt/dollar for me than a RSP-320-12.
 
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paullyxmas76 said:
I have them for $49.99 delivered on EBay...
For LRS-200-5

% off discounts for multiples purchased
Also available in the store
LRS-350-12
RSP-350-12
RSP-500-12
SE-600-12
All with Free Shipping AU stock


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Thanks, this is my first year using pixels, if i'm using a total of 3,320 pixels (a combination of icecels, candy canes and a wreath) in my display would need around 21 of these 40amp power supplies? Have i got my calculations about right?
 
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not even close.

assuming 60mA per pixel at full white full bright, thats 199,200mA or 199A so 5x 40a supplies would just cover you there.

But you want a bit of extra head room, but also you probably wont run full brightness either.
 
Mattslights said:
Thanks, this is my first year using pixels, if i'm using a total of 3,320 lights in my display would need around 21 of these 40amp power supplies? Have i got my callations about right?
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What brightness do you plan to run your show at? What amperage draw are you working on per 100 pixels at 100% brightness?
 
paullyxmas76 said:
What brightness do you plan to run your show at? What amperage draw are you working on per 100 pixels at 100% brightness?
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You also generally run your power supplies at 85% capacity of their total wattage so 170watts or 34amp per supply just to not over power them... 5-5.5 amp or so amps at 100% per 100 pixels you are looking at 5-6 supplies depending on where they are around your yard... If you are running your show at 30% brightness it is even less draw per 100 pixels so less supplies needed
 
paullyxmas76 said:
You also generally run your power supplies at 85% capacity of their total wattage so 170watts or 34amp per supply just to not over power them... 5-5.5 amp or so amps at 100% per 100 pixels you are looking at 5-6 supplies depending on where they are around your yard... If you are running your show at 30% brightness it is even less draw per 100 pixels so less supplies needed
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sorry my numbers were not quite right, this is breakdown of my display, all pixels i'm using are 5v:

1 x Large wreath - 16 strings of 50 = 800
8 x Candy canes - 16 strings of 50 = 800
18 x Roof Icicles - 18 sets of 60 = 1,080
4 x window Icicles - 4 sets of 60 = 240

Total 2,920

With the Wreath I might only use 400 pixels it too bright with 800, but no doubt i would use the 400 somewhere else.

I guess i would like to have the capacity to run them at 100% at certain points in show.
 
Mattslights said:
sorry my numbers were not quite right, this is breakdown of my display, all pixels i'm using are 5v:

1 x Large wreath - 16 strings of 50 = 800
8 x Candy canes - 16 strings of 50 = 800
18 x Roof Icicles - 18 sets of 60 = 1,080
4 x window Icicles - 4 sets of 60 = 240

Total 2,920

With the Wreath I might only use 400 pixels it too bright with 800, but no doubt i would use the 400 somewhere else.

I guess i would like to have the capacity to run them at 100% at certain points in show.
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2920 pixels is around 160amps give or take... At 100% brightness I always engineer for 100% brightness in my show... So running the supplies at 85% is 34amp per supply draw 160/34=4.7 power supplies if running your show at less brightness say 30% is 30%*160/100=48amp...so you can see the difference in draw when you drop your brightness... But all lights at 100% 5 supplies would be plenty... Injection may be required though every 50-100 pixels at 100% I'm not a 5V pixel user I use 12V and I believe 5V pixels use a little less draw as not having to step down the voltage from 12V someone correct me please if I'm wrong as 12V pixels get stepped down to 5V with resistors/regulators
 
paullyxmas76 said:
2920 pixels is around 160amps give or take... At 100% brightness I always engineer for 100% brightness in my show... So running the supplies at 85% is 34amp per supply draw 160/34=4.7 power supplies if running your show at less brightness say 30% is 30%*160/100=48amp...so you can see the difference in draw when you drop your brightness... But all lights at 100% 5 supplies would be plenty... Injection may be required though every 50-100 pixels at 100% I'm not a 5V pixel user I use 12V and I believe 5V pixels use a little less draw as not having to step down the voltage from 12V someone correct me please if I'm wrong.
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Thank you! Working out how these lights work is like putting a jigsaw puzzle together. I'll put the order in tonight.
 
Katekate said:
not even close.

assuming 60mA per pixel at full white full bright, thats 199,200mA or 199A so 5x 40a supplies would just cover you there.

But you want a bit of extra head room, but also you probably wont run full brightness either.
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Thanks KakeKate
 
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