Easy laser? Attach battery to module?

DealExtreme
Can't you just attach a power source, like a battery to the 2 lead wires, that's on that module? If so what kind of batteries.
And if it was that easy, wouldn't I be able to stick it in cool places, like, say for example, put it in a mint case? (With some modifying of course)

Dnl747 said:

DealExtreme
Can't you just attach a power source, like a battery to the 2 lead wires, that's on that module? If so what kind of batteries.
And if it was that easy, wouldn't I be able to stick it in cool places, like, say for example, put it in a mint case? (With some modifying of course)

Click to expand...

I just received one of these. They are 3V, I am going to power mine from a 3.0V regulator.

You can run these from battery power, but must be 3V type of suitable capacity, they rate the consumption at 250mA which I will confirm tonight once I mount my new module and test it.

Dnl747 said:

DealExtreme
Can't you just attach a power source, like a battery to the 2 lead wires, that's on that module? If so what kind of batteries.
And if it was that easy, wouldn't I be able to stick it in cool places, like, say for example, put it in a mint case? (With some modifying of course)

Click to expand...

You could put 2x AA or AAA batteries between the wires or a Cr2 3.0V battery between the wires although i think a CR2 wont last long...
and im not to sure if there are CR123 3.0V batteries out there..

See my recent thread re DX. I just tested this 200mW unit, it is bright! It lights matches so must be at least 100mW. Current consumption at 3.0V is 700mA!!!!

dnar said:

I just received one of these. They are 3V, I am going to power mine from a 3.0V regulator.

You can run these from battery power, but must be 3V type of suitable capacity, they rate the consumption at 250mA which I will confirm tonight once I mount my new module and test it.

Click to expand...

Hey dnar,

In case anyone's confused, you don't NEED to run it from a regulated source as that's what the driver is for. I'm sure you know this but it's just for clarity. It is possible to run them on 3.7V but in my experience this may give more power short term but the stability goes out the window and heat poses problems sooner.

It shows a little that the module is rated at 250mA but actually needs 700mA to achieve the full output so basing battery choice on this information may result in a disappointing beam. 700mA is still a little low for 200mW IMO but it may be that these modules are just that good!

Congratulations on your new match lighter! Let us know how long it lasts and how stable it is.

M

Morgan said:

Hey dnar,

In case anyone's confused, you don't NEED to run it from a regulated source as that's what the driver is for. I'm sure you know this but it's just for clarity. It is possible to run them on 3.7V but in my experience this may give more power short term but the stability goes out the window and heat poses problems sooner.

Click to expand...

True, however any more than 3.0V and the driver has to dissipate more power = heat = possible phaph out. I have to regulate 12V down anyways, so 3.0V it is.

Xtrm2Rick said:

.....
and im not to sure if there are CR123 3.0V batteries out there..

Click to expand...

Photographic non-rechargeable CR123 batteries are 3V (there are also "packed" ones that are 6V, for some types of cameras).

Only, they cost a lot, imho (here, at least )

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dnar said:

True, however any more than 3.0V and the driver has to dissipate more power = heat = possible phaph out. I have to regulate 12V down anyways, so 3.0V it is.

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Yes. That is part of what I meant by heat posing a problem sooner but I don't think it's that the driver has to dissipate much extra heat. It mainly drives the diode harder which then affects alignment, promoting modehopping and shortening lifetime. Most of these types of drivers are often rated to operate at 3.7V, (although this one sensibly only mentions 3V), but the diode may not be happy with it's supply at that voltage.

That's what I have seen anyway.

I would never run more than 3V anymore and if you have to step it down from 12V anyway, a regulated supply won't do any harm, eh?!

M