"To avoid paying taxes" statement is not true, I'm paying taxes either way, but I can't explain my local bureaucracy and laws in one sentence. Store will be closed probably for another two weeks until new generation of DTP PCBs arrive.
“To avoid paying taxes” statement is not true, I’m paying taxes either way, but I can’t explain my local bureaucracy and laws in one sentence. Store will be closed probably for another two weeks until new generation of DTPPCBs arrive.
And some nice dedicated Osram emitter series drivers?
With the LD-x4, when DD mode is enabled in the menu, does DD replace the constant current high mode? Like if I have a 6A driver and am using with a low Vf LED so DD is say 12A, does enabling DD mode mean I don’t have a 6A mode?
I think weird things would happen if you allow both so I see the point but a shortcut like 2 or 3 clicks for DD might be nice for next gen.
Since it’s possible for DD to be the same as CC high due to battery and LED combo it could have 2 identical modes in a row if it worked that way i guess.
With the LD-x4, when DD mode is enabled in the menu, does DD replace the constant current high mode? Like if I have a 6A driver and am using with a low Vf LED so DD is say 12A, does enabling DD mode mean I don't have a 6A mode?
Yes, if you enable DD, high mode becomes real direct drive, there is no current limit anymore.
“To avoid paying taxes” statement is not true, I’m paying taxes either way, but I can’t explain my local bureaucracy and laws in one sentence. Store will be closed probably for another two weeks until new generation of DTPPCBs arrive.
Best of luck with the reopening. I’m excited for you (and to see new products).
With all these current limited LEDs we are really missing out on these drivers. I hope you are able to get the store figured out before too long as it really feels like prime time for linear drivers. Who knows next year we may be flush with buckboost drivers and some obscure 9V LEDs or something.
Linear drivers will stay in flashlight world as long as source of light are LEDs, they are smaller, cheaper and have higher power density compared to switching drivers and that will not change. Also linear drivers can have wider dynamic range of currents without large penalty in efficiency,for ex. it's much less challenging to make linear driver with output adjustable from 0.1mA to 20Amps.
Another advantage is driver quiescent current while driver is active - it can be in xx uA range, which is almost impossible for switching drivers (mA range), so runtime on moonlight/very low modes can be significantly better with linear drivers.
While switching drivers in theory have higher efficiency, in practice (single cell - 3V LED) difference in average efficiency is 5-10% typically - not as high as many here claim. Reason for that is battery voltage drop, so linear drivers maybe start with ~75% efficiency when battery is full, but as battery voltage drops efficiency raises to ~100%, so average efficiency is somewhere in between, depending on which mode you use the most. If flashlight is mostly used in lowest and highest mode, there is almost no difference in efficiency because switching drivers efficiency is not that high either on those modes.
Switching drivers are only option when number of cells in series is not equal to number of LED "dies" in series.
How long do you plan to keep it closed?
Constantly closing stores to avoid paying taxes is a very bad attitude towards customers :/
"To avoid paying taxes" statement is not true, I'm paying taxes either way, but I can't explain my local bureaucracy and laws in one sentence. Store will be closed probably for another two weeks until new generation of DTP PCBs arrive.
led4power.com
Looking forward to the reopening. Best of luck to you and your business!
Looking forward to the store resuming operations, I have 2 hosts in need of emitters and drivers.
USB power meter/tester thread
And some nice dedicated Osram emitter series drivers?
I'm working on new driver generation, but it will take some time.
led4power.com
With the LD-x4, when DD mode is enabled in the menu, does DD replace the constant current high mode? Like if I have a 6A driver and am using with a low Vf LED so DD is say 12A, does enabling DD mode mean I don’t have a 6A mode?
Yes it’s one or the other.
I think weird things would happen if you allow both so I see the point but a shortcut like 2 or 3 clicks for DD might be nice for next gen.
Since it’s possible for DD to be the same as CC high due to battery and LED combo it could have 2 identical modes in a row if it worked that way i guess.
Yes, if you enable DD, high mode becomes real direct drive, there is no current limit anymore.
led4power.com
Thanks. I was thinking of a driver for the SBT90.2 in my convoy L2 which ideally would have a 6A ~1hr regulated mode plus DD turbo.
Best of luck with the reopening. I’m excited for you (and to see new products).
Old Lumens Contest 2020 - Hand-made light category
ZL SC62(w) | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 | Purple FW3A, 4000K SST20 | Baton S1
Boruit D10 w/ Quadrupel Fet+1/Anduril | EagTac D25C Ti | DQG Slim AA Ti | Jaxman E3 | UF-T1 by CRX | Olight S15 Ti | Nitecore EX11.2
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special | Thrunite T10Tv2
Supfire M6 3xXHP50.2, Sofirn C8F, Unfinished: Sofirn SP70, IYP07/Tool AAA hot-rods, Jetbeam E3S
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100
With all these current limited LEDs we are really missing out on these drivers. I hope you are able to get the store figured out before too long as it really feels like prime time for linear drivers. Who knows next year we may be flush with buckboost drivers and some obscure 9V LEDs or something.
Linear drivers will stay in flashlight world as long as source of light are LEDs, they are smaller, cheaper and have higher power density compared to switching drivers and that will not change. Also linear drivers can have wider dynamic range of currents without large penalty in efficiency,for ex. it's much less challenging to make linear driver with output adjustable from 0.1mA to 20Amps.
Another advantage is driver quiescent current while driver is active - it can be in xx uA range, which is almost impossible for switching drivers (mA range), so runtime on moonlight/very low modes can be significantly better with linear drivers.
While switching drivers in theory have higher efficiency, in practice (single cell - 3V LED) difference in average efficiency is 5-10% typically - not as high as many here claim. Reason for that is battery voltage drop, so linear drivers maybe start with ~75% efficiency when battery is full, but as battery voltage drops efficiency raises to ~100%, so average efficiency is somewhere in between, depending on which mode you use the most. If flashlight is mostly used in lowest and highest mode, there is almost no difference in efficiency because switching drivers efficiency is not that high either on those modes.
Switching drivers are only option when number of cells in series is not equal to number of LED "dies" in series.
led4power.com
And this is why we <3 you. I have a 2 euro coupon on your books so I need a reason to waste like $50. See you soon
World needs Led For Power!
Neven, any update?
WTB Titanium 4sevens 2xAA tube
Still closed,sorry.
led4power.com
Aw, crap... just came over here to get some parts...
"I am the flashlight king! I can light anything!"
Hello,
is there something new with the shop?
I´m looking for a driver for SBT 90.2 with some (more) amps.
Powered out of 4 or 8 parallel Cells.
Thanks a lot.
Hi, it's still closed.
led4power.com
Any interesting news to share?
+1
I am waiting for the reopening.
I need some Q8 4040/5050 mcpcb.
Store will be opened in first week of 2021.
led4power.com
Oh yeah, get your wallets ready
Wishing you the best for this new phase of business
MY REVIEWS THREAD /// My Flashlight Collection ///
Mods: 1 / 2 // TIR: 1 / 2 // Others: Biscotti 3 + 1*7135 / Triple TIR w/ XP-G2 /// My Review's Blog (PT) /// OL Contest 2019 /// OL Contest 2020 /// GIVEAWAYs: 1 / 2
Thank you!
led4power.com
Will there be a premium shipping option to South Africa?
Armytek Prime C1 Pro, Armytek Prime C2 Pro, Armytek Tiara C1 Pro, Astrolux MF01 Mini, BLF Q8, BLF A6, BLF FW1A, BLF FW3A, BLF FW3C, BLF LT1, Convoy L6, Convoy C8+ , Convoy S3, Emisar D4, Fireflies E07, Jaxman E2L, Manker MC13, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II.
Most of them have been modded! =)
https://photos.app.goo.gl/JaJaDv4V838AEJf39
Registered shipping for many countries is not not available, but I see it is available for South Africa.
led4power.com
Looking forward to your reopening! Any new items Neven?
thanks neven….
Elzetta Bones.
New design of 3030,3535,4040 16 and 20mm DTP PCBs, Osram CULNM1.TG for now.
led4power.com
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