A2/ SL Task-Lights with blown Xenon ?

[JohnK]

Does anyone know if this would stop the current to the LED's? Does the power supply to each have it's own path ?

 

[JohnK]

Where is Al when you need him ? I know the A2's LED's and Xenon are on at the same time. Blow the bulb, lose the whole circuit ?

 

[K-T]

If the A2 bulb breaks the LEDs keep working. Don't know about the SL.

 

[Chris M.]

If the Streamlight one is the same as the Nuwai one, then I`m pretty sure the LEDs are seperate. They share a seperate slot or two on the four mode switch`s cycle (and go out when the Xenon lamp is on) so should be able to be switched on if your lamp burns out.

The advantage of the A2 (besides the "user interface") is the fact that the LEDs are on already if your main bulb goes, so you`re not plunged into darkness.

/ubbthreads/images/graemlins/grin.gif

 

[McGizmo]

On the A2,

It was designed so cleverly that you can pull the incandescent LA out of the light and still have the LED's work! This not a trivial design feature; just another mark of exceptional forthought to function.

- Don

 

[The_LED_Museum]

[ QUOTE ]
McGizmo said:
On the A2,

It was designed so cleverly that you can pull the incandescent LA out of the light and still have the LED's work!

[/ QUOTE ]

I tried doing that to my A2 awhile ago and the LEDs didn't work at all!!! /ubbthreads/images/graemlins/frown.gif
They must have changed it from the time I got my A2 until now.
I don't know if the LEDs will go out if the incandescent bulb blows out or not, but I suspect they would continue to function and not depend on the bulb filament for continuity.

This is only a guess though, so take this advice with large quantities of crystallised sodium chloride. /ubbthreads/images/graemlins/wink.gif

 

[JohnK]

Pulling the bulb should do the same thing electrically (break the xenon circuit) as a burned bulb. Hmm. Just wondering.

Anyone with one of the SL Twin-Task lights tried pulling the bulb to see what happens ?

 

[Shark]

I think FC blew the bulb on his A2 within 30 sec. of firing it up and if I remember corectly I think he said the LED's were still working. Of course SF cust service fixed him up with a new one right away. /ubbthreads/images/graemlins/thumbsup.gif

 

[The_LED_Museum]

[ QUOTE ]
JohnK said:
Pulling the bulb should do the same thing electrically (break the xenon circuit) as a burned bulb. Hmm. Just wondering.

[/ QUOTE ]

Pulling the bulb (assembly) out of an A2 also removes part of the circuit, though I'm not sure if blowing a bulb (but leaving it in) also removes the LEDs from the circuit.

I guess blowing up the bulb on purpose is one way to tell. /ubbthreads/images/graemlins/icon15.gif

 

[McGizmo]

Craig,

That's odd that your A2 didn't work without the incandescent LA. Try it again??!? The midle contact ring should contact the leaf springs of the LED LA and the battery tube contacts the head which is the other leg of the circuit. The middle ring is common to both LED and incandescent. It would be interesting if other A2 owners were to try the light with out the incandescent LA.

I believe the SL is a single pole multi throw switch with independant circuits for the various light sources. Having one blown or missing should not effect the others.

- Don

 

[Shark]

SN A00876 works without the lamp and SN A02444 also works without the lamp.

 

[The_LED_Museum]

[ QUOTE ]
McGizmo said:
Craig,

That's odd that your A2 didn't work without the incandescent LA. Try it again??!?

[/ QUOTE ]

I tried it a couple more times, and sure as {vulgar term for feces} it didn't work at all with the LA removed.
I just now tried it again, still no worky. /ubbthreads/images/graemlins/frown.gif
My A2's serial number is A00110 if that makes any difference.

 

[PaulW]

Say, how do you get the lamp out? I can't seem to find the magic combination of push & pull & twist. (SN A03131)

 

[McGizmo]

I have 112 and 783 and they both work sans IN-LA. To get the incandescent LA out, I grab the elevated contact washer with my fingernails and pull straight out. Craig, I wonder if your leaf springs are flattened down too much? That's strange that your LED's don't work! You do have the three screws holding the LED Ring in, right? I have noticed that without the screws, the contact to head can be open.

- Don

 

[PaulW]

Don,,

Thanks, that works. It's easier than I thought.

Paul

 

[Size15's]

Sorry, I was off-line having a life (Bank Holiday weekend). I didn't go home last night and it was rude not to stay for brunch as she was very persuasive /ubbthreads/images/graemlins/wink.gif

Anyway, I have SureFire A2 A00079 - none of the LED rings I have work with the MA02 lamp removed. I have not yet broken a lamp so I don't know whether the LEDs work with it blown.

I do know that lots of changes were made during the early samples. It is usual for the proto-types/pre-production samples that I've been sent for field-testing and evaluation to be different from the released versions though.
For example, how many of you have an M2 Shock Isolated Bezel with a Lexan lens?

As Don says, it is an important feature that if the main bulb dies that the LEDs remain on. I hope that more A2 users can feedback to see whether this is the case in reality with current versions of the A2.

Al

 

[Chris M.]

A2 number 866 here.

I just took the lamp out and not only do the LEDs work, but I even get 2 levels of brightness! When the regulator kicks in it must power not only the main bulb but the LEDs too - it`s just not noticeable when the Xenon lamp is there.

/ubbthreads/images/graemlins/eek.gif

 

[Size15's]

Chris, it's not often I get surprised by a man in Wales.

Is it a big difference?

Al

 

[Chris M.]

Not immense but certainly very noticeable. Estimated around 2 times as bright in high mode....

Like this:

As I said, not a huge difference but it is obvious.

/ubbthreads/images/graemlins/grin.gif

 

[Size15's]

Thanks for the beamshots!

Al /ubbthreads/images/graemlins/smile.gif