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AusChristmasLighting 101 Manual
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101 display basics
What is the pixel amount limit on a single power supply?
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[QUOTE="merryoncherry, post: 134577, member: 37249"] 350W is generally underpowered for a 12V 16-port controller. There are usually 5A fuses on the ports, so 80A for the whole board, but a 350W 12V PSU is going to do ~30A. But you asked about a specific scenario - 4800 pixels on a 350W PSU. This depends on the pixels (a regulated pixel may be .6W, but the more common 12V resistor pixel is .3W). Resistor pixels also have the trait of using less power as the voltage drops, so 300 at 25' distance is not going to be able to draw 5A, maybe 2.5A, no matter what you do. If you loop power around to the back of the end of the string, then ~4-5A. But you also asked about 30% brightness. 30% of .3W is ~.1W, times 4800 pixels is 480W that they would take on full white (which is admittedly rare). Still, makes you think that a bigger PSU / second PSU would be more appropriate for 16 ports if you are going to load it up. For these reasons, I never kit out a 16-port controller with just 350W. I'm usually building it in March or June, with an unclear purpose, so make it dual PSU in case I want to use it with a lot of pixels. [/QUOTE]
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What is the pixel amount limit on a single power supply?
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