Bridgelux EB series gen 3 strips

[unkle_psycho]

I'm really surprised everyone here recommends a lower voltage power supply ran in parallel. I don't see a problem as your isolated from ground so with 24v vs 240v you still need to complete the circuit. What the deal with that recommendation?

In Europe they basically tell us we can't work on anything above 50v for security reasons. If a person without an electrical degree has made a single over 50v device that is kept in a building, all house insurance would be voided in any emergency situation.
Living as a guest in someones house makes it simple for me. I can't shit on my host and void their insurances

I find the whole thing quite amusing, since they always teach us at school how European electricity kills less people because of our lower current. Then they regulate us non-electricians to an ever lower voltage and the higher currents that come along with it.

[unkle_psycho]

It depends if I hear back from bridgelux. I want to create lights for 3 4x4 Chambers. 12 lights per 2x2 driven at min 30 watts and max 60 watts. So a total of 144 strips. I'm wanting to use the hlg-240h-c1050a for each 2x2.

I'm interested in the IES files because I'd like to know how high I can hang the lights to maintain a minimum of 600 ppfd at 240 watts.

Actually I have a question if you don't mind. If my forward voltage during startup is higher than the driver range, what will happen? Will the driver just reduce the current until the lights heat up and the vf drops?

Here is my situation. The max output voltage of the 240h-1050 is 238v at 1050ma. The expected forward voltage of 12 eb gen 2 strips at 25*c is 240v. But when they reach stable operating temp the vf is 236.4v. Can the driver cope with that at startup or would it reduce the life of the driver? I don't want to run in parallel, hence my delima.

I really appreciate the help.

Do you know of someone using such power levels? thats like 60w/ sq foot. 5.4 DLI per hour. PPFD should be closer to 1500 then 600

I'm referencing this thread: https://www.rollitup.org/t/samsung-f564 ... ld.953509/ I am more interested in this being an all fits one lamp. I want to be able to set this at 5-7ft away and still get decent par levels. I looked at getting a hlg-185h-c1050 but I do not believe I will be able to increase the height more than 1 ft. away. Please change my mind!

Quite interesting. I never worked with optics, preferring to run up close, but wouldn't you benefit quite a bit from optics with this kinda approach? Penetration would likely be awesome for strains that have an open canopy?

I've always been impressed by the results people got hanging 1000w HID's high above the canopy. With leds I'm working on the opposite - side lighting, likely hitting pretty similar power levels too, with a little over half my light on the walls.

Will definitely be following with interest.

[BirdBare]

Do you know of someone using such power levels? thats like 60w/ sq foot. 5.4 DLI per hour. PPFD should be closer to 1500 then 600

I'm referencing this thread: https://www.rollitup.org/t/samsung-f564 ... ld.953509/ I am more interested in this being an all fits one lamp. I want to be able to set this at 5-7ft away and still get decent par levels. I looked at getting a hlg-185h-c1050 but I do not believe I will be able to increase the height more than 1 ft. away. Please change my mind!

Quite interesting. I never worked with optics, preferring to run up close, but wouldn't you benefit quite a bit from optics with this kinda approach? Penetration would likely be awesome for strains that have an open canopy?

I've always been impressed by the results people got hanging 1000w HID's high above the canopy. With leds I'm working on the opposite - side lighting, likely hitting pretty similar power levels too, with a little over half my light on the walls.

Will definitely be following with interest.

I bought led lenses when I made my cob setup. After testing I never installed them. I like diffuse light more than intense directional light. plus they reduce like quantity. I think there is research to back up diffuse light but I'll have to find it.

Honestly, your approach is great too. Have you noticed a yield increase after adding the under canopy lights?

This really is not a light for just growing weed. I have trees and herbs all in the same grow tent I would like to keep happy. I also like not having the light 1ft from the canopy.

I'm ordering the lights today so hopefully I'll have something to show off in a month or two.

[BirdBare]

I'm really surprised everyone here recommends a lower voltage power supply ran in parallel. I don't see a problem as your isolated from ground so with 24v vs 240v you still need to complete the circuit. What the deal with that recommendation?

In Europe they basically tell us we can't work on anything above 50v for security reasons. If a person without an electrical degree has made a single over 50v device that is kept in a building, all house insurance would be voided in any emergency situation.
Living as a guest in someones house makes it simple for me. I can't shit on my host and void their insurances

I find the whole thing quite amusing, since they always teach us at school how European electricity kills less people because of our lower current. Then they regulate us non-electricians to an ever lower voltage and the higher currents that come along with it.

Thats bureaucrats for you hahaha. I think the dangers of high voltage DC are overstated. Sure, If your supply is not isolated from AC mains then you can accidentally ground yourself and your screwed. From a fire perspective, low current is always better in my eyes.

I don't think we have laws like that here is the US. I'll have to check just to make sure I don't screw the household over. Thanks for the info!

[BirdBare]

Here is something on diffuse light. A ton of stuff popped up.

https://www.frontiersin.org/articles/10 ... 00704/full

It also easier on the eyes. Win Win lol. These LED bars are going to be amazing. I've been wanting something like this for a long time!

[unkle_psycho]

I'm really surprised everyone here recommends a lower voltage power supply ran in parallel. I don't see a problem as your isolated from ground so with 24v vs 240v you still need to complete the circuit. What the deal with that recommendation?

In Europe they basically tell us we can't work on anything above 50v for security reasons. If a person without an electrical degree has made a single over 50v device that is kept in a building, all house insurance would be voided in any emergency situation.
Living as a guest in someones house makes it simple for me. I can't shit on my host and void their insurances

I find the whole thing quite amusing, since they always teach us at school how European electricity kills less people because of our lower current. Then they regulate us non-electricians to an ever lower voltage and the higher currents that come along with it.

Thats bureaucrats for you hahaha. I think the dangers of high voltage DC are overstated. Sure, If your supply is not isolated from AC mains then you can accidentally ground yourself and your screwed. From a fire perspective, low current is always better in my eyes.

I don't think we have laws like that here is the US. I'll have to check just to make sure I don't screw the household over. Thanks for the info!

Yes we live in a socialist utopia, where government officials (we dont have public servants )create regulation on the fly, for our own safety of course. We don't even have the right to self defense, or to many kinds of repairs to the house. It's quite amusing to see how popular our model is becoming in the US.
I think the best example of how socialism works is our new traffic warning system. The government created a system where they can take over all the radios in the case of an emergency. Maybe three times they took over my radio to announce an accident 400-600 miles away. Lane closed etc. Another three times the person controlling the system just decided to play the country some song he likes.
Last christmas I had my kids over from Asia, and we were on a long ride. We had a huge row because both kids wanted different music. I intervened and announced everyone gets 20min, starting with me. When my 20min was done the kids announced it, and what was to be played next. I put the CD in, and this socialist muther f%#&er took over my radio and starting playing 1950s hits. The kids went ape shit, I tried to sincerely explain that someone has taken over everyones radios but even the kids were smart enough to know that something like that could never happen, and looked at me like I was shitting them. I swear 95% of what our government does is utter madness, maybe the other 5% gives us some good rep.

[unkle_psycho]

The side lighting works great, I giggle seeing people trim the lower third of their plants, and only use a little space vertically... especially in places with plant counts. It's all reminants of HID for me. I think the biggest point of LED is the form factor, not efficiency.
I really decided on it after looking through a couple of scientific papers on canopy penetration. They all said it was dependent on leaves, not light power, and that was my experience too. Some strains gave no penetration, but yielded well without too much power on the sides.

Now it was the summer so I vegged a couple of plants outside, but my next tests will be doing 12-16wk sativas with side lighting. I'll be aiming for strains that shoot out lots of side branches, and really fill the space up.

There was someone in the US selling a system called suncloak and there is a demo on many grow sites, by a dude called tommy trichome. Worth having a look at.

[TEKNIK]

You are correct, the biggest advantage to led is form factor, when used correctly.

[0 to 220]

Lol @ that story about the radio. So very typical. I could write a book about it, but it has been done adequately already... its title is 4 numbers

[unkle_psycho]

Lol @ that story about the radio. So very typical. I could write a book about it, but it has been done adequately already... its title is 4 numbers

It really symbolizes how it goes. Everything gets justified with serious arguments, then some jackass is put in charge.