MR-X with X3T. Hotlips with Magic Resistor TK. #1

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Re: Hotlips w Magic Resistor constant current circ

dz... found a copy of the annotated component diagram
 
Re: Hotlips w Magic Resistor constant current circ

great HT, saving it to my hard drive in case it gets offline again.

One thing, the instructions say to "Measure the voltage between the switch negative and the FET source with a DMM. You will get 225mV". That's a misprint right? I'm pretty sure it is but just making sure. It's refering to 22.5mV for 1.5A correct?

Thanks for everything....appreciate the great help!

-WC-
 
Re: Hotlips w Magic Resistor constant current circ

Ooops... should be 22.5mV /ubbthreads/images/graemlins/blush.gif
 
Re: Hotlips w Magic Resistor constant current circ

A MR-X has come home /ubbthreads/images/graemlins/grin.gif Well, home country anyhow... Welcome Shannow /ubbthreads/images/graemlins/smile.gif

MR-X-brethren.gif
 
Re: Hotlips w Magic Resistor constant current circ

that was quick !
/ubbthreads/images/graemlins/grin.gif
bernie
 
Re: Hotlips w Magic Resistor constant current circ

I made a lanyard for my MR-X out of stuff from the berkeley point group buy.
It just cinches on with a loop spliced at the end.
That loop that the mini-clip is clipped to, is spliced into the lanyard.
I like how the colors matched (by default), but it's a pity, because I don't carry or use the MR-X. The lanyard does see use on my MagCharger.

I can also be used to swing the light quite hard.


MR_X_lanyard.jpg
 
Re: Hotlips w Magic Resistor constant current circ

I just don't use the MR-X. I don't want to sctratch it up, or damage it. I guess it's more like a showpiece, than a worklight.

The Magcharger is inexpensive & very bright, although the color and shape of the beam leave much to be desired.
 
Re: Hotlips w Magic Resistor constant current circ

Shankus, you're certainly entitled to use whatever works for you. It's just sad (to me) that your MR-X doesn't see more service. It's lighter, smaller, and longer running than the MagCharger. I have one of each myself, but save the MagCharger for the times when I need a way powerful, long THROWING beam. It throws a beam WAY down the road! Almost like a spotlight disguised as a regular flashlight. (Note that I'm running a WA01160 bulb in my MagCharger.)

I use my MR-X in little bits here and there. For doing anything outside at night, from taking out the trash to investigating a strange noise near the fence, it never lets me down.

Although I am pretty careful about not dropping it for fear of scratches. /ubbthreads/images/graemlins/ooo.gif Maybe I'd better look into a lanyard like yours...
 
Re: Hotlips w Magic Resistor constant current circ

Wow is this thing still available?

and is a Kit available to? I would love to have this on a 5-6 cell D
 
Re: Hotlips w Magic Resistor constant current circ

SKYWLKR, I assume you mean the MR-X flashlight, not Shankus' lanyard... right? /ubbthreads/images/graemlins/wink.gif There were approximately 15 MR-X lights made and Hotbeam can't put any more together due to lack of availability of the key component: an X3T emitter. However, in theory you could put your own light together using a similar design but different emitter. You'd need a Hotlips-D heatsink, the host flashlight of course, and one of Burnt_Retinas' "Magic Resistor" (MR) circuits. I'm not sure if there are any more MR circuit kits floating around anywhere, but if you ask Burnt very nicely, there's always a chance he could help you out.
 
Re: Hotlips w Magic Resistor constant current circ

I do occasionally use it around the house, like you said, but it sounds like not as often as you do.

I have the 01160 in mine as well, and soon to have either the Magcharger PMR/OP or MagCharger Mag Daddy on it.

The MR-X is a fine light indeed. I also still toy with the idea of replacing the red LED with a RGB color shifter, but I've been afraid to try. I think I remember Hotbeam telling me that it may or may not be epoxied in place.
Mine seems to have clear RTV, or something like it covering the LED.
I have successfully "turned down" one of the LEDs by locking it into the collet of my Dremel, and turning it against a file. I don't know how to polish the plastic afterwards, either. And I can't muster up the fortitude to break into the MR-X.
 
Re: Hotlips w Magic Resistor constant current circ

Say, that's a great idea for turning down an LED! Gotta try it sometime. Thanks dude! /ubbthreads/images/graemlins/wink2.gif

Regarding MR-X... I've got a spare MR circuit board kit, and have long struggled with a good idea for what to do with it. I think I've finally got it! I want to get a VERY good LuxIII emitter (U bin?) and build a MR-U in a shortened Mag 2D, powered by 4AA NiMH rechargeables in one of Chief_Wiggum's 4AA-to-D adapters. The result would be something roughly the size of a Blaster Jr., but with absolutely MONSTER throw and a smaller form factor... though it wouldn't provide all that wonderful spill that the MR-X does.
/ubbthreads/images/graemlins/icon3.gif
 
Re: Hotlips w Magic Resistor constant current circ

what kind of out put would a V3U get with that driver?

I'm asuming that I wount be able to push it to the X MA rating
 
Re: Hotlips w Magic Resistor constant current circ

SKYWLKR, to be honest, I'm too lazy at the moment to lookup the lumens output of each bin code, but I can tell you that many of the Space Needle II lights that MR Bulk used to make contain V2T emitters. The V part is what determines the luminosity (in other words, brightness) of the LED. I'd guess you could drive your V3U at 1.5A without too much difficulty by regulating it with a MR circuit, and you'd get something at least as bright as a Space Needle II. My guess would be that you'd end up with a light pumping out roughly 7000 lux, as opposed to the 10,000-12,000 lux that the MR-X generates. Remember that 7000 lux still ain't bad! /ubbthreads/images/graemlins/grinser2.gif
 
Re: Hotlips w Magic Resistor constant current circ

[ QUOTE ]
milkyspit said:
Say, that's a great idea for turning down an LED! Gotta try it sometime. Thanks dude! /ubbthreads/images/graemlins/wink2.gif

Regarding MR-X... I've got a spare MR circuit board kit, and have long struggled with a good idea for what to do with it. I think I've finally got it! I want to get a VERY good LuxIII emitter (U bin?) and build a MR-U in a shortened Mag 2D, powered by 4AA NiMH rechargeables in one of Chief_Wiggum's 4AA-to-D adapters. The result would be something roughly the size of a Blaster Jr., but with absolutely MONSTER throw and a smaller form factor... though it wouldn't provide all that wonderful spill that the MR-X does.
/ubbthreads/images/graemlins/icon3.gif

[/ QUOTE ]

where to yu plan on getting the Unobtanium emitter from? THats a great Idea I would like to make one too...onyl in a 2C formatt on 2-3 123's
 
Re: Hotlips w Magic Resistor constant current circ

[ QUOTE ]
Justintoxicated said:
[ QUOTE ]
milkyspit said:
Regarding MR-X... I've got a spare MR circuit board kit, and have long struggled with a good idea for what to do with it. I think I've finally got it! I want to get a VERY good LuxIII emitter (U bin?) and build a MR-U in a shortened Mag 2D, powered by 4AA NiMH rechargeables in one of Chief_Wiggum's 4AA-to-D adapters. The result would be something roughly the size of a Blaster Jr., but with absolutely MONSTER throw and a smaller form factor... though it wouldn't provide all that wonderful spill that the MR-X does.
/ubbthreads/images/graemlins/icon3.gif

[/ QUOTE ]

where to yu plan on getting the Unobtanium emitter from? THats a great Idea I would like to make one too...onyl in a 2C formatt on 2-3 123's

[/ QUOTE ]

Well, that's the hard part. Might end up with a MR-T. /ubbthreads/images/graemlins/icon15.gif
 
Re: Hotlips w Magic Resistor constant current circ

Shankus/Milky: To be honest, mine just sits on my shelf and every night when I take my door (**edit: DOG /ubbthreads/images/graemlins/grin.gif) out to do his business, my lights think to themselves "Who will it be tonight? /ubbthreads/images/graemlins/grin.gif". Most times now, it is the PM6/BB750/X3T or even the 3AA DD. The MR-X is simply TOO BRIGHT /ubbthreads/images/graemlins/smile.gif Now and again, I bring out the MR-X and whenever it lights up, a grin appears across my face /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif

SkyWalker: Assuming the MR (regulator) is available, a V3U @ 1.5A would still put out decent light. Remember though the brightness goes in the order of U, V, W then X /ubbthreads/images/graemlins/smile.gif

Justintoxicated: Now that JSBurly has Pila's availabe, the MR in a 2C (running 2 x Pila 150A/S) or in 3C body (running 2 x Pila 168A/S) would be mighty nice!!
 
Re: Hotlips w Magic Resistor constant current circ

A little grin appeared on my face, just thinking of your door doing it's business.
 
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