East-92 4amp 17mm driver

[ryansoh3]

200Hz seems painfully low.

I remember my East-92 to be 6kHz PWM on low and med.

Thanks for the schematic though!

[ohaya]

@ryansoh3

200Hz seems painfully low.

I remember my East-92 to be 6kHz PWM on low and med.

Thanks for the schematic though!

On the two that I got from Fasttech, I can sometimes hear the whine in medium, when I can get it into medium mode, but I think/hope that tivo might be able to fix that :)!

[ohaya]

@ohaya

So, I dug out my scope, and one of the probes was still connected, and it still works :): The pic above was scoping the MOSFET GATE pin when the driver was on medium. Anyway, since I now have the scope working, I confirmed that on my driver, there was no PWM on high mode.

I am quoting myself, to reiterate what I said above, which was different from what I was asking/guessing earlier: On the 2 drivers I have from FT, THERE IS NO PWM ON HIGH MODE, based on scoping the MOSFET GATE pin.

The pic above was in medium, and I only posted it because I wanted to show that my old Tektronics scope was actually working :)…

Sorry if I caused confusion :(.

Jim

[moviles2]

ok the east-92 is discontinued but it exist this other clone

driver

the mosfet appears to be good

datashet

[ohaya]

That looks like one of the ones that comfy got earlier (left one in his pic):

East-92 4amp 17mm driver

I was wondering if anyone knows where I can purchase one of these drivers. Fast tech are out of stock and taken the low voltage one off their site. No-one else seems to have it. Or if there is another driver with similar specs that will fit a HD2010 without any modifications?

which he described as:

Sub-1amp 092B on the left, 2.5A 092 on the right.

in this post:

East-92 4amp 17mm driver

I was wondering if anyone knows where I can purchase one of these drivers. Fast tech are out of stock and taken the low voltage one off their site. No-one else seems to have it. Or if there is another driver with similar specs that will fit a HD2010 without any modifications?

So that explains part of the mixup, i.e., FT is mixing this driver (moviles mentioned):

https://www.fasttech.com/products/1612/10001998/1321600-1-lithium-5-mode-24a-led-flashlight-driver

with this driver (the now-discontinued “EAST-092”):

https://www.fasttech.com/products/0/10001752/1127405-3-7v-5v-5-mode-led-flashlight-direct-drive-driver

[ohaya]

Hi,

FYI, geek, and then Jasmine, have responded to the FT forum thread(s):

https://www.fasttech.com/forums/1127405/t/1056716/geek-east-092-can-fasttech-screen-for-the-good

The latest post from Jasmine:

The following is the test results from our technicians:

Output curent: 800mA (3.7V), 1500mA (4.2V), 2600mA (5V)

And also after checking with the distributor, we’ve confirmed that they have been providing the 2.6A ones without notifying us, but they can not even remember the exact date of the stock swapping. They have also confirmed that the 4A one is no longer available.

If you’ve received the 2A one and would like to return them for a refund, please contact our CS staff using support ticket. Sorry for any inconveniences caused.

We will look for other alternative sources of supply and keep you updated.

[moviles2]

hmmm ok after read old post this east-92B appears to have pwm in high mode

post 113

[ohaya]

@moviles2

hmmm ok after read old post this east-92B appears to have pwm in high mode

post 113

That’s what it sounds like, e.g.:

East-92 4amp 17mm driver

I was wondering if anyone knows where I can purchase one of these drivers. Fast tech are out of stock and taken the low voltage one off their site. No-one else seems to have it. Or if there is another driver with similar specs that will fit a HD2010 without any modifications?

So, it sounds like we’ve been dealing with, and discussing two different drivers, at least recently :(, and FT hasn’t helped matters by apparently (apparently) mixing them together in orders !

[nottawhackjob]

But this cluster over a simple driver has gone on for way too long to be other than BS IMO.

The simple solution is you remove all your stock send it all back to the supplier and only restock with proven stock. Especially with this driver which is now in big back logged demand. Me thinks they must have a bunch of the crappy ones and are trying to stealthily unload them over time on those that don’t know the difference.

Thousands of businesses all over the world get it done. Simple as that. FT for some bizarro BS over the top extended beyond all normal reasonableness can’t. And this is after umpteenth complaints with back and forth trips to shippers.

Enough with the lame BS excuses. This is causing a crap load of wasted time and unnecessary frustration for their customers over a $3 item. I find that to be a touch unappreciative of their biz to boot. I ain’t buying it amigos.

[ohaya]

Hi,

I’ve been testing one of these in a light, and similar to when I was testing it on the bench (outside a light), I am having trouble getting the driver to change modes consistently. I have to keep clicking until I can get it into low mode or into a blinky mode (I use that to tell if the driver is installed ok, without shorting), but once I get it to either the low or blinky mode, if I try to cycle through the modes, it gets to high mode, then gets stuck there in high mode again.

I think that someone else mentioned this also.

Is there a “trick” to getting these drivers to change mode correctly?

Thanks,
Jim

[montanaman]

I myself hope that Fasttech works it out with their supplier and brings back the 4A version of the East 092. I just received a HD2010 from Tmart that has the 4A DD version and its comparable to my TN-31 as far as throw gos, for $28.00 instead of $150.00. Id love to put one of these drivers in one of my XinTD with a copper SinkPAD and a xm-l2 u2 1a emitter and a Pana PD 18650, and see what kind of throw I could get outta that combination. Are there any other 17mm DD drivers out there, that are comparable to the East 092?

[ryansoh3]

Not that we know of, but tivo is working on a DIY solution.

[Ouchyfoot]

Has anyone tried the east-92 with 4P 18650?

[Hyprmtr]

I been thinking the same thing the past week or so. I considered putting one of my east-92 drivers in a Small sun T6 flashlight. It uses 2P 18650 batteries. Or even better I could put an East-92 driver in one of my Courui XM-L2 3P 18650 lights.

The most I was able to get out of an east-92 driver single cell was 5.8A with an unprotected TF 26650. I wonder if 2P NCR18650B would be too much?

Ken

[Ouchyfoot]

The COURUI has an electronic switch so the east-92 won’t work.

[Ouchyfoot]

@Hyprmtr

I wonder if 2P NCR18650B would be too much? Ken

If anything, I figure four cells should hold the high current reading stable for a longer period before it starts dropping.

[Hyprmtr]

@Ouchyfoot

The COURUI has an electronic switch so the east-92 won’t work.

Yes that’s right.

I will have to play around with this later today. I will post results.

Ken

[bibihang]

@Ouchyfoot

The COURUI has an electronic switch so the east-92 won’t work.

Another member here has done his Courui mod with Nanjg driver by using the stock Courui driver as a contact board,

Teardown and Mod Thread of Courui XML2 Aka "Big Head 3x18650 Side-Switch Thrower"

Just want to say at the start, this isn’t a full review of this light. Just an initial impressions and technical teardown, to see what this light is all about. It’s also done firmly with the idea of modding in mind, and frankly if you’re looking for a light that works great out of the box without having to get your hands dirty. I can say right now, this light probably isn’t for you - Right, so this is a relatively new light and was brought to our attention by Pok a few weeks ag…

[Hyprmtr]

@bibihang

@Ouchyfoot

The COURUI has an electronic switch so the east-92 won’t work.

Another member here has done his Courui mod with Nanjg driver by using the stock Courui driver as a contact board,
Teardown and Mod Thread of Courui XML2 Aka "Big Head 3x18650 Side-Switch Thrower"

Oh yeah! I remember reading that thread! Thanks for the reminder! I will do the same but with a east-92!

Ken

[Hyprmtr]

Oh and another thing, I should have my other 10 east-92 drivers in a few days. They are in Los Angeles. I will test the latest drivers available from Fasttech.

Ken