see4
Well-Known Member
is that sqft? or ft?I've used both for a 10ft. area, ~370w at the wall!
is that sqft? or ft?I've used both for a 10ft. area, ~370w at the wall!
Hi Mo,Have you any links for the 1750K 'fresh meat chips' in EU / UK?
is that sqft? or ft?
Yeah, I know what you mean, sometimes it's too bad for me too, then I have to push everything aside and just go out into mother nature, otherwise my skull would burst!Good job, my bipolar is going havoc, while waiting for my parcel. Have like 45 tabs open in chrome at last count.
Haha,Maybe the form factor is right to slip in some Samsung boards
Actually, you get cool diffuser films these days. Some will bend light sideways like for pool lighting.
One could use it on strips on the edge to add light around the borders.
Up to 1050mA you can test it without a heatsink. Only when they reach 85°C I would stop going higher. For a quick 1,4A test also a small sheet or any other metallic surface is enough. And like I said, you don't need any TIM because of the low thermal pressure. Many members are using double sided thermal tape but it's hard to remove and I would use it only in the final build not for testing pourposes.My strips and one driver was just delivered. Guess I gotta brave the heat and go look for some Aluminium U channel or some shit.to test them out with.
Didn't give this much thought, but I think I am out of heatsink paste too.
Thanks Randomblame, Nice find , I'll investigate further but I should have been more specific.Hi Mo,
Found them yesterday on e3ay sold as full spectrum grow tubes. Each strip inside the 2ft. tubes contains 48 SMD2835 diodes with a 1850°k phosphor layer. I've ordered 10 2footers yesterday and will test them as soon as they arrive but I'm pretty sure the efficiency is not comparable, maybe 70-80lm/w if any..
Had them first seen on Alibaba, but the shipping costs ... you know? These tubes here use the same strips and I could find them postage free on e3ay. I am sure, if you are looking for the e3ay article number, you will find it on ebay.uk with free shipping.
I'll disassemble them and take the strips out, they're probably built in 8s6p or so, so you can hang them probably on a 24v driver. But I'll see that when I break them down.
I think, in the tubes sits a small 360mA driver, so that the LEDs are running at 60mA(~9w). If so, this gives plenty of room to overdrive the diodes because SMD2835 can handle up to 150mA. One could drive them with up to 900mA/~22w with proper cooling. But thats only my estimations, we will see it soon.
https://www.ebay.de/itm/T8-LED-Pflanzenlampe-Tube-9-18W-60cm-90cm-120cm-Leuchtstoffrohre-Volles-Spektrum/182907252228?_trkparms=aid=555017&algo=PL.CASSINI&ao=1&asc=20160630134825&meid=bed6fa41d4bb44029c91cbc9b495c02a&pid=100507&rk=1&rkt=1&&_trksid=p2045573.c100507.m3226
Yeah! Hard to find those little bastards!Thanks Randomblame, Nice find , I'll investigate further but I should have been more specific.
It was the @PSUAGRO. "Bridgelux" 1750K cobs I'm after.
Negotiating the digikey site is a complete pain in the aris for me lol
Maybe @RainDan can help you out?I think they ship Internationally? I know they don't sell just the chips but they build on site in san diego, have them in inventory.......dan will usually take care of the RIU community, within reason.Thanks Randomblame, Nice find , I'll investigate further but I should have been more specific.
It was the @PSUAGRO. "Bridgelux" 1750K cobs I'm after.
Negotiating the digikey site is a complete pain in the aris for me lol
Thanks mate.Yeah! Hard to find those little bastards!
And then only if you take 100 or so.... no luckily not in case of Vero29
Part-No. for Vero18 fresh meat is BXRC-17E4000-B-74(C or D if you want the other versions) and the best way to find what you want is to know the part-no. and apply it into the search engine.
Vero18 food series, only in increments of 100:
https://www.digikey.de/products/de?keywords=BXRC-17E4000-B-74
Vero29/1750°k seems only available in SE edition but you can luckily get only one for ~30$ +VAT:
https://www.digikey.com/product-detail/en/bridgelux/BXRC-17E10K0-C-74-SE/976-1645-ND/7033058
Thanks my friend, I'l look into it.Maybe @RainDan can help you out?I think they ship Internationally? I know they don't sell just the chips but they build on site in san diego, have them in inventory.......dan will usually take care of the RIU community, within reason.
worth a shot(PM a quote), or just add some osram hort 660nm "strips" to 3000k-4000kcobs like random did from the german site.