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

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luminarium iaculator
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led4power wrote:

At request of luminarium iaculator (before thread  Remote FET / capacitor tail switch board group buy (collecting interest) existed), I’ve also started with design if FET tailcap, it’s a little bit more complex design, end result should be similar, but price for 500pcs group buy (min. 10pcs per buyer) would be 3.5€ assembled (no spring).


Potentially I could make plastic end piece with thread for mounting waterproof M8 cable gland as option (I need to check local CNC machining prices).


Please let me know if someone is interested to see if there is enough interest.


 


 

Led4Power,

Worth to mention here that the new FET switch should be designed without need to additionally modify main flashlight driver…

So far from what I can se in JaredM and Quadrupel version of FET switch it seems that an additional bleeder resistor modd needs to be added somewhere on the driver? If so… I don’t think everyone will want to fiddle with that and modd the driver to get an working FET switch.

Yantar
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MoreLumens wrote:
Does anyone know if that spacer will fit on M21A host?

The spacer fits M21A ok.

Regards!

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Yantar wrote:
MoreLumens wrote:
Does anyone know if that spacer will fit on M21A host?

The spacer fits M21A ok.

Thank you. I was just thinking to ask that again in some other thread. Shocked
Now it’s hard to choose if I should get nice and colorful C8 like orange or tan M21A for that.

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luminarium iaculator wrote:
.

Led4Power, Worth to mention here that the new FET switch should be designed without need to additionally modify main flashlight driver... So far from what I can se in JaredM and Quadrupel version of FET switch it seems that an additional bleeder resistor modd needs to be added somewhere on the driver? If so... I don't think everyone will want to fiddle with that and modd the driver to get an working FET switch.

 

Only simple resistor bleeder between driver + and gnd is required. I think the point is to have these fet switches for those who (will) sell new lights together with fet switch, in that case seller modifies driver and end user doesn't have to do any kind of modifications.

 

Yantar
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MoreLumens wrote:
Now it's hard to choose if I should get nice and colorful C8 like orange or tan M21A for that.

Or:

 

Regards!

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Yantar wrote:

MoreLumens wrote:
Now it’s hard to choose if I should get nice and colorful C8 like orange or tan M21A for that.

Or:



 

Does one of those or all have that spacer + some 6xled setup?
If so, what driver are you using?

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MoreLumens wrote:

Does one of those are all have that spacer + some 6xled setup?
If so, what driver are you using?

Of course, and one is waiting for the assembly:

Driver: LD-B4-20 in 8-12A configuration
Leds: 6x Luxeon V (very floody), 6xLuxeon V2, 6x LUMINUS SST-20 4000K 95CRI, on mosX PCB (with MOSFET+NTC+connector).

Regards!

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Looks nice. Thumbs Up
I got that 6xSST20 without MOSFET+NTC+connector waiting for, well everything else. LOL

luminarium iaculator
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led4power wrote:

luminarium iaculator wrote:
.

Led4Power, Worth to mention here that the new FET switch should be designed without need to additionally modify main flashlight driver… So far from what I can se in JaredM and Quadrupel version of FET switch it seems that an additional bleeder resistor modd needs to be added somewhere on the driver? If so… I don’t think everyone will want to fiddle with that and modd the driver to get an working FET switch.


 


Only simple resistor bleeder between driver + and gnd is required. I think the point is to have these fet switches for those who (will) sell new lights together with fet switch, in that case seller modifies driver and end user doesn’t have to do any kind of modifications.


 

Hi L4P! Beer

I now understand that bleeder mod on driver… Piece of cake.
I just visited JaredM thread and I will have to quote myself here again:

I think that it is not big deal for personal mods or if someone starts with flashlight sale from 0. But it is big deal and problem for someone who already sold lets say 200 of lights on market and now he wants to offer special version of FET switch for that lights because that switch won’t work with “old lights” because previous versions of lights don’t have bleeder resistor modd on drivers.

I am in 200 + situation, and I am probably sure that I am not the only one… Because I can’t offer special super FET remote switch for sale without driver modification on older lights.

If there is a way without bleeder resistor modd on driver I would be interested. For now I am not interested because of mentioned “bleeder resistor modd on driver”.

Don’t give up from this. This is super and very good stuff. Thumbs Up

But please if you have solution for my problem(I am sure that I am not the only one with this problem) please also offer version of FET switch without need for bleeder resistor mod on driver.

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Bleeder or coin cell, I'm afraid there is no other option, maybe some drivers can leak a little bit of current by themselves, but that's too unreliable and temperature dependent.

You can offer old buyers driver modification, or just offer new sets for those who want it.

luminarium iaculator
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led4power wrote:

You can offer old buyers driver modification, or just offer new sets for those who want it.

That is pretty much impossible in my case… Well theoretically it is possible… But then I would probably end up in mental institution hospital.
Because you can’t actually explain to people why some new(same) flashlights can have “special FET switch” while old same flashlight can’t.
People out of this forum are not even familiar what 18650 battery is and reverse polarity insert of such battery is only logical thing to them LOL Facepalm

Try to explain to such person that if he wants to buy new FET remote switch from me that he must send me flashlight for bleeder resistor modification on the driver. And even if he understand what I am talking to him I will certainly not do it for free and that means buyers shipping plus return shipping plus my time to repack, solder, repack again and resend all that back to buyers address with post office?

Because of that I am skipping this for now… I can take few pcs for my(and my family) personal use but that’s it…

One day with the new series of hunting flashlight I will have that as an option from very start of production.

So please keep developing this FET switch.
This is something that is needed very much in a flashlight world (all kind of duty jobs like police officers, soldiers, safeguards, for hunters, for self-defense purpose, etc), actually we all need that Thumbs Up Beer

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A lot of hunters are flush with cash and would totally not question a new generation of flashlight that comes with such a switch included. You get to sell an additional flashlight, they move their old light to backup weapon. Win win.

Yea it’s just a resistor but based on your post I can see you are more customer service and tech than marketing cause any other ‘brand’ would not hesitate one more inexpensive feature that lets them bump up the cost of a new product.

luminarium iaculator
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contactcr wrote:
A lot of hunters are flush with cash and would totally not question a new generation of flashlight that comes with such a switch included. You get to sell an additional flashlight, they move their old light to backup weapon. Win win.

Yea it’s just a resistor but based on your post I can see you are more customer service and tech than marketing cause any other ‘brand’ would not hesitate one more inexpensive feature that lets them bump up the cost of a new product.

I kinda have my own brand but it is just one flashlight model. And when you have certain stock of that model(lets say 150 pcs) you got to sell that first because no one will want to buy old model over new model which has improved FET switch with bleeder resistor modd on driver… You could offer old model at lower price but then you messed up your earnings and not to mention couple thousand of $ for the new batch of lights, and not to mention you gotta sell almost half of them to be on positive zero, and rest half is your earnings…, a lot of time until you actually earn something…

But there is solution for persons with my issue and that is battery powered FET switch. I am pretty sure that L4P can make that one too Beer

If you ask me remote FET capacitor switch with bleeder resistor mod on driver is ultimate hunting solution.
But remote FET battery powered switch also ain’t that bad. Main problem is battery of course and certain type of costumers: type 1. Costumers that are unable to replace it although they have clear instructions(they don’t wanna mess with that and then they call you, and then you talk, explain and loose your precious time because of stupid battery Smile )., 2. In my case very few costumers who understands basics and would know how to replace it but they will be unable to get such battery(and of course they will call you and demand such battery and who knows will even I be capable to get it Question , so again stupid battery problem… ).

So simple solution like FET capacitor switch with bleeder resistor mod on driver instantly bypasses all that unpleasant situations and you sleep more peacefully as a seller Thumbs Up

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MoreLumens wrote:
Looks nice. Thumbs Up I got that 6xSST20 without MOSFET+NTC+connector waiting for, well everything else. LOL

Would this driver work with that:
https://led4power.com/product/ld-a4-20-2-12amp-20mm-constant-current-led...

Also what “extras” I would require if I’m going to use that in Convoy M21A host with lighted tail? Low current bleeder at least, anything else?
Current range 8-12A?

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If you want to use LED board with FET installed, LD-B4-20 variant is needed.

Bleeder is needed for lighted tailcap, you don't need signal wires option because you'll get those with LED board, if you don't have spring and LED wires in your modding box, then you'll need those too.

Current range - if you are building light with 6xsst-20, 8-12A is mostly used, but you can use any range (brightness vs runtime and temp. rise trade-off).

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I finally got around to turning down the spacer so I could put the 6x SST20 board and ANNA optic into my C8F. I’m not sure if it is brighter than before but I do prefer this over the stock setup. The head gets warmer than before when held on high/turbo which makes me think that it is pushing more power than before even though it is the stock driver.

I’m going to order a -M (C11806) and a -W (C11807) optic for it. I suspect I’ll prefer the -W.

I don’t mind the 4000k and 95cri but it does seem like I prefer 5000k

Hrmm. I don’t remember seeing this before…
https://led4power.com/product/6x-luxeon-mz-5700k-90cri-led-lmz9-qw57-34-...

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MZs are out of stock and discontinued, listing was on page for a long time.

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