The Mean Well HLG line is the undisputed king of drivers in the DIY LED grow light world. The goal for this series of videos is to provide a complete breakdown of everything you need to know about them, whether you’re totally new to DIY LED, or a seasoned vet. We’ll be covering:
- Constant current vs. constant voltage and the pros and cons of each
- Series and parallel wiring, and when you might need to use each type
- A-type vs. B-type drivers and some considerations you’ll need to make when picking between them
- Dimming single and multiple drivers
- Reading the data sheets and applying the important specifications
- Matching any LED to a CC and CV driver
Part 1 of this series provides an overview on the different types of drivers within the HLG line and focuses on constant current models and series wiring.
I’ve been working on a little experiment lately.
I’ve got got 3 little 2’x2′ spaces set up in the basement, and each of them has a single Quantum Board in it. The first space on the left is a 4000K 80 CRI board, the second in the middle is a 3000K 80 CRI board, and the third is a 3000K 90 CRI board. Each of the 3 spaces has 4 jalapeno plants in it from the same pack of seeds, and I’m feeding all 12 plants the same amount of nutrients from the same batch, at the same time. All 3 boards are getting the same amount of power and are hung at the same height.
We’ve officially hit the 1 year mark and what better way to celebrate than giving something away? Up for grabs is a brand new Horticulture Lighting Group HLG 65 light, which is great for vegging up to a 2’x2′ space. Just log in to the gleam app below and follow the instructions to enter. The giveaway is open to anyone 21 and older in the USA and Canada (excluding Quebec). The rest of the terms and conditions are visible in the bottom-left of the box below.
LEDGardener.com HLG 65 Veg. Light Giveaway
It can be a pain in the ass having to sort through a bunch of data sheets to find what you’re looking for, so I’ve compiled all the relevant specs for Mean Well Constant Current and Constant Voltage HLG series drivers into a couple spread sheets. I’ve also pulled data from their test reports – you’ll see info from the specification sheet marked “SPEC” and then info from Mean Well’s testing, marked “REPORT”. You’ll notice that usually these drivers are capable of doing a little more than they’re rated for, however this is often for the “A” type driver, on which you are able to adjust the voltage or current higher than you can on the “B” type.
Here is the constant current sheet.
Here is the constant voltage sheet.
Since a lot of people have been looking for help on their strip builds, I figured it’d probably be helpful to have a calculator just for this. Now that we’re seeing more and more of these systems being built, it has become apparent that running all strips in parallel is the way to go – it’s expandable, the math is easier for large numbers of strips, and wiring is less confusing, so I’m only doing this for parallel builds. Check out the parallel strip build tool below!
From Instagram live: Taking another run at overpowering a QB288, this time with an HLG-600H-54 and a boost converter. Sorry for the crappy quality and vertical video – the format it saves to isn’t great for watching on PC.
In this video, we assemble a Horticulture Lighting Group HLG 550 from individual components and then test it out.
This videos goes over an aluminum frame build for 4x Citizen CLU048-1212 COBs going in a 2’x2′ tent. It ain’t beautiful, but it sure as hell is functional!
Are the Quantum Board Reflectors worth your time and money? This video examines their effectiveness in an open air setting as well as in a tent.