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Is it possible that 420mA of rkcstr is powered by 2x 10440?

SHIN

SHIN

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Jul 25, 2009
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Hi. everyone.

I am a newbie and I planned to make my 22x dvd burner red laser.
I want to make it in pen host.

I have a question;
Is it possible that a "rkcstr" drive of 420mA is powered by 2x 10440 ?

I know a 10440(from AW) is 310-320mA of current.
Can I make my red laser of 420mA with two of 10440s?

Please help.
Thanks.
 





yes, it will work fine.

Pen style hosts arent recomended for your first build. buy an led-flashlight style host. "I sell them"

And 420mA with no heatsink WILL kill your diode most likely. i suggest 390mA

but yes, two 10440's are plenty to power your laser, and they are 600mA apiece, not 320.

Hope this helped.

Tyler - Dark Lasers
 
Thank you for the reply, darkarmyofone.;)

I heard somewhere that although 600mA is written down on 10440 from ultrafire, trustfire etc, the true current is around 300-350mA.
I cannot measure the current directly because I have no such device. So I think 10440 of AW(a famous member of CPF) has more accurate description.

I wonder if 420mA red pen(2x 10440) is not possible...:thinking:
 
Plenty of voltage for a rkcstr/red build with 2 X 10440 because the diode is only going to draw about 2 volts.

For a blu-ray on the other hand, your driver would soon drop out with only 2 X 10440's. 3 would be better in that case.

I know you were asking about current, but voltage comes into play in this case as well.

Plenty of current. A Li-Ion battery is safe to draw at a 2C rate. That is, twice it's mAh capacity. For example, if your battery is a 500mAh battery, you can draw 1000mA's and not harm the battery...
 
use thermal paste on your aixiz module. I set mine at 300-325ma to the diode for long life.
 
Hi. jayrob
Thank you. I've made LG BH08 pen alreeady at 308mA rkcstr successfully in your pen. It can burn white paper immediately without focusing.
Red will be hot and difficult to handle the current in pen but I'd like to add my pen collections.:yh:

Hi. daguin
Thank you. It's my honor to see the brilliant frontier of LPF.;)

And thank you, bryce007. I use arctic silver.:yh:
 
SHIN said:
Hi. jayrob
Thank you. I've made LG BH08 pen alreeady at 308mA rkcstr successfully in your pen. It can burn white paper immediately without focusing.
Red will be hot and difficult to handle the current in pen but I'd like to add my pen collections.:yh:

Hi. daguin
Thank you. It's my honor to see the brilliant frontier of LPF.;)

And thank you, bryce007. I use arctic silver.:yh:
Click to expand...

8x in a pen? How long can you run it before it gets hot? I wouldn't think a pen has enough mass to handle an 8x.
 
My BH08 pen starts to be "warm" at about 30 sec. I use my pen about 30 sec. It is not hot like the red.
 
SHIN said:
My BH08 pen starts to be "warm" at about 30 sec. I use my pen about 30 sec. It is not hot like the red.
Click to expand...

hmm interesting. I was weary about even trying a 6x in a pen. Maybe I'll give it a shot.
 
SHIN said:
Hi. jayrob
Thank you. I've made LG BH08 pen alreeady at 308mA rkcstr successfully in your pen. It can burn white paper immediately without focusing.
Red will be hot and difficult to handle the current in pen but I'd like to add my pen collections.:yh:

Hi. daguin
Thank you. It's my honor to see the brilliant frontier of LPF.;)

And thank you, bryce007. I use arctic silver.:yh:
Click to expand...

Good job! :gj:

I was not saying that it would not work in that combination...

Only that the battery supply would soon drop below the voltage needed to regulate the set current steadily.

Even when the driver begins to 'drop out' of regulation due to lack of proper input voltage. The laser will work. But the output power will drop.
 
jayrob said:
Good job! :gj:

I was not saying that it would not work in that combination...

Only that the battery supply would soon drop below the voltage needed to regulate the set current steadily.

Even when the driver begins to 'drop out' of regulation due to lack of proper input voltage. The laser will work. But the output power will drop.
Click to expand...

And considering most inexpensive 10440's are under spec as far as mA/h rating goes, it'll be even less run time.
 
Thank you for the advice.

After I finish my collection of pens, I plan to make my p60 laser series.

Because I was a flashaholic once, I have variable type of p60 module and their compatible host. So p60 bearing Aixiz can overwhelm the weakness of pen host.
Whether powered by any combination of batteries, or whether drived by any driver, I'll be able to change the host easily or daily.

SHIN
 
Last edited:
p60 is a drop-in LED module for their compatible flashlight(surefire etc).
It is somewhat standardized.
I have a plan to make Aixiz-bearing heatsink instead of their reflector.

p60 module
P60 sized led drop-ins (part 3) - CandlePowerForums

p60 host
* P60 Flashlight List {host} - CandlePowerForums

p60 DIY example
DealExtreme: $3.24 26.5mm Smooth Aluminum Drop-in Module Set (without Emitter)

Wide variety of p60 host can be powered by any combination of batteries .(10440 cr2 14500 cr123 18650 ...1x, 2x, 3x extension tube)
 
Last edited:
SHIN said:
p60 is a drop-in LED module for their compatible flashlight(surefire etc).
It is somewhat standardized.
I have a plan to make Aixiz-bearing heatsink instead of their reflector.
Click to expand...

I worked with this module (or its pre-cursor) back in my more experimental days. I remember thinking then that someone should build "drop-in" modules. I was working on exchangeable heads at the time. I believe Milos also worked with this host, but he basically rebuilt the modules.
nose.jpg


Peace,
dave
 
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