Dave, I wrote the info down in case I want to make the YL a Birthday
present. A tad expensive for a gift but if it will let her grow
tomatoes year round, it'll make her happy with me and that always
bodes well... ;)
The Circuits On Board (COB) LEDs are CXB3590 series
Apparently there are two varieties; 36V and 72V I don't know if one
is different other than the other other than the 36V version requires
twice the amps of the 72V version. The one he showed me had 4
different ones on it; 3000K, 3500K, 4000 & 5000 The make other
spectra but I don't know what they are. Apparently there are
different light spectrum versions of the CXB3590 depending on their
specific use in growing.
The drivers for the LEDS is
HLG-185H-C700A for 72V LEDs
HLG-185H-C1400A for 36V LEDs
Contact information
Jerry, is the distributor
jl@kingbrite.cn
http://m.kingbriteled.en.alibaba.com/productlist.html
I don't have any other particulars but this should be helpful when it
comes to getting the RFI down in your neighborhood.
73,
Gary
KA1J
> Can you provide model numbers?
> --
> 73's, and thanks,
> Dave
>
> For software/hardware reviews see:
> http://www.nk7z.net
>
> For MixW support see:
> https://groups.yahoo.com/neo/groups/mixw/info
>
> For SSTV help see:
> http://groups.yahoo.com/neo/groups/MM-SSTV/info
>
>
>
> On Tue, 2016-02-16 at 20:24 -0500, Gary Smith wrote:
> > There may be a remedy sooner than later that will resolve the grow
> > light issue; High efficiency, Circuit On Board COB LEDs. A Vegan
> > friend was showing me his winter-time greenhouse and it was
> > impressive.
> >
> > Instead of using the high powered mercury and sodium lights to grow
> > his veggies, he is using the COB LEDs attached to 10" x 36"
> > heatsinks. The efficiency of these are far greater than conventional
> > grow lights and use a fraction of the energy to run them for the
> > same
> >
> > lumen output.
> >
> > He said one of the COBs (Made by Cree) at 50W equals 150W in lumens
> > of the conventional lights and the COBs last for 50,000 hours while
> > the conventional grow lights age quickly and last for two growing
> > cycles, then have to be replaced. More, the conventional bulbs
> > create
> >
> > high heat issues and the COBs do not. FWIW, each COB is about the
> > diameter of a 50 cent piece.
> >
> > My YL is a Vegetarian and I have been thinking of setting up a space
> > in one of the rooms for her to grow her veggies in during the winter
> > and to get a head start on spring planting. I've never wanted to
> > have
> >
> > that here because of the RFI from grow lights & also from the
> > electric bill.
> >
> > I asked him to bring one of his lights over so I could see what if
> > anything it does to my K3. He did and it was an incredibly bright
> > light, the heatsink did not get so hot I couldn't keep my hand on it
> > after 120 minutes of being on and best of all, zero RFI to the K3
> > regardless of which antenna and frequency I tried.
> >
> > Considering the efficiency and longevity of these new LEDs, I have a
> > feeling the conventional grow lights are going the way of the
> > incandescent light. This will be a good thing.
> >
> > 73,
> >
> > Gary
> > KA1J
> >
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