hey well much to my go YouTube channel
taught an interesting highly requested
test in for you today and this is an AC
driverless Samsung LM 3:01 be bored and
I express took about six or seven weeks
to come through so been waiting for a
patiently and put up for test day you
can see how it does will it compete with
the full driver versions by the likes of
chilled and Romero and HL VG and all
those sort of guys well we're gonna find
it quick overview of it first it's round
SMD single mount device board so it's
got multiple the samsung LM 3:01 B
diodes on it it's got then the special
feature of man to the course on a pin
fin heat sink on the backhoe and you
also get this acrylic cover for two
pretty Glen's not the highest quality
looking optical device but we did try it
on see I have worked and we tested but
yeah it's a it's a fairly basic thing
Penton heating is nice enough and got
lots of unnecessary holes in it so it's
a generic thing I think it's been used
for lots of different models not all the
screws were topped right so I could only
get three screws in on this version and
I could have drilled it out and
and retucked but I wasn't bothered just
for a relatively short test yeah 220
volts so I just got a mains cable to
plug straight into the mains there it
comes through the back you can see there
comes through the back entry the front
and into those push type terminals on
the front and yeah so it's screw the
board onto the heatsink push in the
wires to connect it up and we're ready
to go there you go nice and nice and
bright specified as 100 watts it at 240
volts it consumes 106 watts we hung it
up in the 2 foot by 2 foot grow area
Silvermine our walls optimized it from
height to 20 centimeters height again
getting the center measurement the
highest measurement less than it has in
pbft and we did the usual we did the 16
measurements across the grow area to get
the average ppfd across the go area
multiplied by the area to get the total
amount of ppfd we did this boat with the
cover on and the cover off we're gonna
go with the cover off version because
that's what we have been comparing since
Rho G controversy that's what we have
been comparing for efficiency for this
type of device we are the general
Samsung LM 3-0 won't be combinations
with meanwhile drivers we've tested
three of them so far four three four of
those combinations so far and they sort
of ranged from maybe 2.05 up to two
point one five nearly 2.2
any difference is this if the chips are
what they say they are versus some so
we'll be down to driver efficiency and
this driver is a flip-flop driver and
basically means it's it's relatively
low-tech and quite simple and also
unfortunately low efficiency and you get
flicker so you wouldn't be using this
for filming or any sort of fancy stuff
with human lighting but for plants they
don't care
delay is flickering on and off why would
they care and but it does affect
efficiency dramatically so we've had a
book too for lots of other versions of
this lights this unfortunately so 1.49
with the cover off best result with the
cover on or the lens on it delivers a
1.38
and the spread of light is no better
cover on or off so I would go a cover
off from efficiency it's gonna help with
heat dissipation just I'm not because
the driver is mounted on the board with
the lighting it's generating a lot of
heat
it's obviously not very efficient it's
it's sort of maybe seventy percent
efficient 65 70 percent efficient and
I've got a measure later but um I have
to damage the board to do it so I didn't
want to do today so yeah it's about 70
percent efficient which is pretty low
generating quite a lot of heat so you
know this pin fin heatsink is definitely
required and you puppy should be putting
I didn't but you should be putting some
thermal paste in between the board and
the heatsink just to get that heat away
from the driver as fast as possible I
looked at the operating temperature
surface temperature of the chips on the
board and they're okay they're running
at about 60 to 70 degrees centigrade and
about 20 degrees warm so they're running
about 50 degrees over I'm it which is
not bad I didn't look up the specs for
the chips themselves to see what they
could tolerate but for electronics
that's not a hugely high temperature so
yeah an interesting format the
limitation with this really is the
driver so the fact that you've got this
low cost a small component driver faded
onto the board it's very convenient but
you lose a whole load of efficiency
pretty much a quarter of the fish over
quarter thirty percent of the efficiency
lost due to that convenience yeah
interesting to hear what you think about
these ones link is in the description
below haven't put the price here cuz you
know the arguing moves time you can
somewhere else cheaper and better there
so let's you comment on the pricing
yourself where you find it and I think I
think it's good value or money or not
when you add in all the delivery fees
import duties import taxes that etc etc
so yeah interesting little board nice to
test the Quartier cupboards take care by