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Aahh! Short recap: - V_f needs to be supplied so I can put current through the diode, that voltage does not produce light emission. - to put a desired current through then, I take the internal resistance, calculated as the slope from the linear part of the diode-specific I_f/V_f graph...

So a resistor is "taking up" voltage and thereby reducing current? I think about either wiring in parallel with resistors like seen in the diagram above or in this diagram or in series as in this diagram advantages and disadvantages: series: - advantages: --- voltage adds up and can be...

In parallel wiring, the voltage is split evenly on all lines. The whites are 2.84 V, the reds are 1.99 V. In this circuit diagram there are three lines in parallel, 2*(8 series of 8* 2.84 V diodes (8*2.84 V in series=22.72 V) in parallel =22.72 V_f per each one of that two lines) and 1* series...

I maent, how close/tight are the voltage (V) (or U) and amperage (I) connected, because you mentioned them in two sets, implying the connectedness (and I know they are), but was thinking constant current / constant voltage and how things would go different between raising them together for the...

How tight are U and I tied together? (getting kinda personal all of a sudden) Is it an electrical/physical constant conecting them, or a material, load-specific constant (maybe temperature related?) ?

Yeah, saw it better when I inverted the color of the board picture and played around a little with brightness and contrast :D there's a new one in the second post, unfortunately I can't edit the thread-post. Thanks mate!

I don't really understand what that means. Can the current be divided asymetrically and what would that mean for loads and "electrical burden" on the loads? It's different from voltage in series, where every load takes just it's needed part, right? So powered by a 5 V source, to put 20 mA on...

That's one of my questions. Will it all run all loads on the same current according to the lowest/highest current-need in the circuit, if available from the driver? All lines in parallel will get the same current. The voltage is the same on all lines. The current is split by all lines equally...

SSK-1-272-RR-V2 as basic for the schematic: EDIT: actual schematic: Nichia 757 data sheet: http://www.nichia.co.jp/en/product/led_product_data.html?type='NF2W757H-F1' Cree XP G3 data sheet: https://www.cree.com/led-components/media/documents/dsXPG3_1.pdf I want blue, red and white on one board...

How long can I edit a post and where can I find such infos? I want to change a pic in a thread https://www.rollitup.org/t/diy-multi-led-grow-light.1032870/#post-15829809 How can I like a post?

Hi, I'm a small time medicinal and recreational user and big time craft enthusiast. I signed in to exchange and gain knowledge in the area of of all electric and mechanic about cannabis growing. Have a good time, peace

I want to built an LED grow light from scratch but I'm not sure what to look for when wiring in series and parallel on the same board. I want it to have different types of LEDs with different wavelength, like the Spider Farmer SF4000 or the SSK-272-RR-V2 for example, so I have to deal with...

Can somebody provide a schematic for the SF4000? I want to build a full spectrum LED board but i struggle with wiring different LEDs (different current and voltage usage) in the same circuit/to the same driver so it would be helpful to see how they did it (specs of all LEDs, resistors...