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

1581 posts / 0 new
Last post
ttt
ttt's picture
Offline
Last seen: 1 month 1 week ago
Joined: 04/01/2019 - 14:47
Posts: 27
Location: toulouse

Hi neven;
May be a stupid question but i got several ld4a drv in my mod box
And i dont know how to reconize a 6,9 or 12 amp one
Is there a way ?

MtnDon
MtnDon's picture
Offline
Last seen: 3 hours 15 min ago
Joined: 08/27/2015 - 18:25
Posts: 4192
Location: Canuk in NM

There is a small smd resistor that sets the output range. I don’t know the values for each but I have changed the amps output on some charger boards. On those less resistance made the amps go up. Can you see if there is one resistor on each driver that is a different value?

ttt
ttt's picture
Offline
Last seen: 1 month 1 week ago
Joined: 04/01/2019 - 14:47
Posts: 27
Location: toulouse

Gonna check
Thanks

led4power
led4power's picture
Offline
Last seen: 12 hours 32 min ago
Joined: 12/29/2012 - 09:48
Posts: 1345
Location: Croatia,EU

Look for 0402 resistor below uC chip; 75kOhm is 12Amp, 100kOhm 9Amp, 150kOhm 6Amp (or 3 Amp in case large shunt resistor is marked with "002" which is 2mOhm).

 

MascaratumB
MascaratumB's picture
Offline
Last seen: 1 hour 5 min ago
Joined: 10/29/2016 - 12:12
Posts: 7128
Location: Portugal

@ led4power,
is there an estimate date for shipping of the products bought in December?
I didn’t receive any e-mail with the shipping info, hence my question.
Thanks in advance Thumbs Up

ttt
ttt's picture
Offline
Last seen: 1 month 1 week ago
Joined: 04/01/2019 - 14:47
Posts: 27
Location: toulouse

Thanks neven useful information

led4power
led4power's picture
Offline
Last seen: 12 hours 32 min ago
Joined: 12/29/2012 - 09:48
Posts: 1345
Location: Croatia,EU

MascaratumB wrote:
@ led4power, is there an estimate date for shipping of the products bought in December? I didn't receive any e-mail with the shipping info, hence my question. Thanks in advance :THUMBS-UP:

I was waiting for LD-4 parts to arrive, within couple of days.

MascaratumB
MascaratumB's picture
Offline
Last seen: 1 hour 5 min ago
Joined: 10/29/2016 - 12:12
Posts: 7128
Location: Portugal
led4power wrote:

MascaratumB wrote:
@ led4power, is there an estimate date for shipping of the products bought in December? I didn’t receive any e-mail with the shipping info, hence my question. Thanks in advance Thumbs Up

I was waiting for LD-4 parts to arrive, within couple of days.

Thank you for the reply Wink
I will wait, no problem at all! Wink Beer

MascaratumB
MascaratumB's picture
Offline
Last seen: 1 hour 5 min ago
Joined: 10/29/2016 - 12:12
Posts: 7128
Location: Portugal

Just wanted to let you know that my stuff has arrived Wink
Haven’t tested it yet but I trust it is all well Wink

Thanks again for your work and products Beer Thumbs Up

maxchaos92
Offline
Last seen: 2 months 2 days ago
Joined: 03/17/2021 - 02:10
Posts: 97
Location: France

Hello L4P, I’m waiting for a delivery from post office, I’ve ordered some leds from you in December,now they seems stuck somewhere in my country,I will try to contact the post office,anything you can do for It? Will let you know how It ends up after some call Crown

led4power
led4power's picture
Offline
Last seen: 12 hours 32 min ago
Joined: 12/29/2012 - 09:48
Posts: 1345
Location: Croatia,EU

Other than tracking number, I don't have any more info about package,sorry.

flightless22
flightless22's picture
Online
Last seen: 4 min 58 sec ago
Joined: 11/19/2018 - 12:07
Posts: 708
Location: California

What is the status on the store?

led4power
led4power's picture
Offline
Last seen: 12 hours 32 min ago
Joined: 12/29/2012 - 09:48
Posts: 1345
Location: Croatia,EU

Still closed until further notice.

LunaLoves
Offline
Last seen: 52 min 6 sec ago
Joined: 05/13/2021 - 16:21
Posts: 27
Location: Hamburg, Germany
led4power wrote:

Still closed until further notice.

I don’t know what happened, but I hope that everything is going as well as it can be.

I’m just hoping that there will be a decent torch parts store in Europe again

Haukkeli
Online
Last seen: 1 min 17 sec ago
Joined: 06/24/2021 - 05:27
Posts: 361
Location: Suomi

Same here!

Azirine
Offline
Last seen: 1 week 2 hours ago
Joined: 12/06/2021 - 22:59
Posts: 94

Is there any way to buy an LD-A4 driver?

led4power
led4power's picture
Offline
Last seen: 12 hours 32 min ago
Joined: 12/29/2012 - 09:48
Posts: 1345
Location: Croatia,EU

Only if some member has spare ones and he's wiling to sell them.

MtnDon
MtnDon's picture
Offline
Last seen: 3 hours 15 min ago
Joined: 08/27/2015 - 18:25
Posts: 4192
Location: Canuk in NM

What size and what amps are you after? (amps can be adjusted with a resistor swap. But they are tiny.)

Azirine
Offline
Last seen: 1 week 2 hours ago
Joined: 12/06/2021 - 22:59
Posts: 94
MtnDon wrote:
What size and what amps are you after? (amps can be adjusted with a resistor swap. But they are tiny.)

LD-A4 7-9A

https://led4power.com/wp-content/uploads/2017/12/LD-4-datasheet-1.1.pdf

MtnDon
MtnDon's picture
Offline
Last seen: 3 hours 15 min ago
Joined: 08/27/2015 - 18:25
Posts: 4192
Location: Canuk in NM

I think I have a never used 17mm version in the 3 amp type that I don’t need. But I have not unpacked a bunch of workshop offs ‘n’ ends yet so can’t even verify for a bit. It might even be a 6 amp; my memory fails me.

Pages