Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

Nooooooo, i was about to buy some MZs on 16 mm boards! :cry:

Saul, Marc, I answered over PM.

Thanks, Neven. I appreciate the confirmation that it did indeed ship. I must have accidentally deleted the order confirmation email in spam. Thanks for your time and diligent work!

Do you know if your Q8 boards are going to be available?
I knew I should have placed an order a couple of weeks ago when I was thinking about it!

You have indeed. Thank you, much appreciated :slight_smile:

Neven,
I just received my order yesterday. Everything looks great. Sorry you had to shutdown again but I’m glad business is going well. The new boards you mention do those include the quads in 3030 and 4040?

3030 tripe and quad yes, 4040 3x/4x possibly (DTP Cu).

How about the Q8 boards Neven?

Cool! Thanks Neven!

PM sent.

Installed the X6 Luxeon Quad! And LD-B4 12A driver- Beautiful!

One question, on highest mode the light flashes 4 times and steps down to quite a low mode after about 10 seconds, is this a mis-configured temp stepdown or something?

Thanks in advance!

Probably it's OTP (default is ~55-60C), you can modify/disable it following instructions from datasheet.

Neven, when your store will be open again, will there be new drivers available that were mentioned some time ago?

I can't precisely tell when since I'm still in process of opening LLC. What can I tell is that I can't "transfer" stuff (LEDs,PCBs etc.) I currently have to LLC, so that sucks, I will at the beginning only have new stuff (MCPCBs, Osram LEDs, LD-x4 drivers). I'm working on drivers (lack of time as usual).

led4power.com ……… not opening / working……… :weary:

Post #1315 :

Disabled it and it worked fine, so I wondered if the board needed better contact with the spacer.

Sanded the legs of the optic a tiny bit, to make sure they were not ‘bottoming out’ before pressing down on the mpcb. Cleaned and re-applied heat transfer compound.

With temp regulation on, light now works for 1min+ before it gets too hot and steps down, all good :+1:

LD-A4/B4 use external NTC sensor for temp. measurement, so driver contact with spacer is not important. Is seems that LED PCB did reach ~60C, which is not too surprising, but if flashlight itself was relatively cold that would mean bad thermal contact somewhere (LED PCB - spacer, or spacer - host, or both). So I would check if there is enough thermal paste, maybe you have aluminum burr/dust from drilling between spacer and host which prevents proper thermal contact etc.

I wonder if there is a way to leave the item descriptions online without the store. I had trouble getting a triple Luxeon MZ working on a MOSX PCB until I found in the Google cache I needed to bridge the MOSFET footprint.

Only way is to manually change stock qty of all items to 0.