voltage

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...

Current ripple. On your drivers, when they are talking about the current ripple, is that a "+/-" figure? That the current could be +(θ)mA or -(θ)mA at any given time? Or that the current could be only+(θ)mA at given time or only -(θ)mA at a given time? Or is it the total range in which the...

So I have 2 areas, 12ft2 & 8ft2. I want to run em the cheapest way possible, while maintaining at least 160+ lm/w efficacy. Thinking... [8] Getian 2828 @37.5w ~170 lm/w [11] Getian 2828 @41.0w ~160 lm/w [1] 480h-36a To the point of the thread, has anyone used a relay, timer, resistor circuit...

Whats up my Led Brothers!!! Finally i got my first light togheter.....Got the aluminum L brackets for the frame, 4 Heatsinks, 4 CXM22's 90 CRI 3500K and a HLG 240H-48A Driver. I am completely new to the LED DIY lighting and need some help before i light this up! Before anything.....how do i...

Quick question.. Can a Vero 29 69.4v cob run off a 71v driver?

Hello rollitup growing community, I have just finished my first set of DIY grow lights. Its a simple setup for a 2x3 or 2x2 grow box. I am using an HLG-185H-C1400B driver, currently 2 Cree CXB3950's and some cheap but silent Alpine fans on two separate heat sinks. My driver runs at an operation...

the title pretty much explain my question. i am trying to buy a 1000w hps light with a 120v/240v switchable ballast. but my house is a 20A 110v. am i going to have a problem with that? appreciate for help.

After multiple searches on RIU and the web, I need to call upon your help since I can't find answers. How do I run LED's of differing voltage on a single power supply? I understand that I need to add LED voltages in series together to calculate the voltage needed from a power supply. Do I do...