thermal guy
Flashaholic
Well from now on I'll send you my lights for a photo shoot. Lol but I'll want them back.
The Malkoff Front Porch
- Thread starter greatscoot
- Start date
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I've been at it long enough there's no excuse.
I'll share with you my most cherished photo ever taken. This is my wife on our honeymoon....41 years ago.
I'll share with you my most cherished photo ever taken. This is my wife on our honeymoon....41 years ago.
INFRNL
Flashlight Enthusiast
Very Nice; but shouldn't you have been doing stuff we don't want to know about...rather than taking pictures of your new Bride
:thinking:
Definitely appreciate you sharing as usual and congrats on 41yrs:thumbsup:
:thinking:Definitely appreciate you sharing as usual and congrats on 41yrs:thumbsup:
thermal guy
Flashaholic
That is a beautiful picture! black-and-white really does show detail.
Thanks guys. She has thus far survived the 41 years with me. As she is so fond of saying, her marriage to me has been the best 10 years of her life!
thermal guy
Flashaholic
Leap baby? Or is it because it doesn't seem to of been that long for her? I'm a little slow😁
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It's her gentle way of reminding me that the honeymoon is over.
thermal guy
Flashaholic
They were fresh 123's. Starting volt on both 3.2.Got 1 A steady. What's strange is I'm getting 1.2 amps with a Lithium ion at 4.2. None of my other Malkoff pull more from a 18650 then they do with two primaries.
thermal guy
Flashaholic
She's got a Malkoff M91 and tricap so I think it's ok to post in this thread😁
INFRNL
Flashlight Enthusiast
That's interesting because i show higher draw on li-ion 4.15-4.2v than 6v on pretty much all modules.
Do you have any runtime test data on that M61W? IF you do, you can do a new test to make sure it matches. I don't have a clear answer for you. That is a big jump (double) from what you previously got.
Nice:thumbsup:
thermal guy
Flashaholic
Yes I'll have to do a new run test.1A draw at 6 volts is way high.My new M61's are pulling around 800 Ma at that voltage and I'm sure I have checked draw on this before. Not sure what's going on. I'd blame my meter but I'm sure it's reading right.
NutSAK
Flashlight Enthusiast
All M61 modules should run at higher current with the lower voltage of a Li-Ion than at the higher voltage of 2xCR123. All of mine do. A lower current at ~4v would indicate that the output would be considerably lower than higher current at ~6v. The current regulation should draw more current from a lower voltage than from a higher one to maintain output.
I don't have an M61W, but I have a couple of M61Ns:
XP-G2 4000K:
- Li-Ion - 880mA
- 2xCR123 - 580mA
XP-G 5000K:
- Li-Ion - 1A
- 2xCR123 - 740mA
Your M61W would likely be configured to run at slightly higher current due to the decreased efficiency/output compared to an M61N.
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thermal guy
Flashaholic
Yes your right. I went back through my data. Mine does draw more off of a 18650. I misspoke or got confused I'm thinking lol.
NutSAK
Flashlight Enthusiast
I added currents to my above comments. I didn't expect you to reply to me at 2am (Central)!! lol
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thermal guy
Flashaholic
I have a 4 year old😂😂😂
But no way should my M61W be pulling 1A at 6 volts. Not only is this almost 400ma above what the specks are. I'm dam sure I have check it before. I'm pretty sure my meter is fine as I'm still getting the readings on my other M61's as should be.ill send a shout out to GENE see what he thinks. It's almost as if it jumped up in draw. But not sure how that could of happened. Thanks for the information and not sure why I was thinking the way I was with my stuff drawing more off of an 18650. I know better then that! Hell, I have checked my stuff quite often.
But no way should my M61W be pulling 1A at 6 volts. Not only is this almost 400ma above what the specks are. I'm dam sure I have check it before. I'm pretty sure my meter is fine as I'm still getting the readings on my other M61's as should be.ill send a shout out to GENE see what he thinks. It's almost as if it jumped up in draw. But not sure how that could of happened. Thanks for the information and not sure why I was thinking the way I was with my stuff drawing more off of an 18650. I know better then that! Hell, I have checked my stuff quite often.
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NutSAK
Flashlight Enthusiast
A Nichia 219B V3 M61 is spec'd to run at 940mA at 6v. To me it doesn't seem out of the question that a warm XP-G would be similar. I'll admit though that I'm not as familiar with the efficiency of the newer Nichias in comparison to the Crees,and if going by the specs on the MD site, you are correct.
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NutSAK
Flashlight Enthusiast
After looking closer at the MD site, I'm going to bet that the listed current spec is wrong for the m61W. If an M61 and M61N are configured at 800mA, it's not likely that a less efficient warm emitter is spec'd lower than that unless we are to expect considerably lower output.
thermal guy
Flashaholic
It is lower 360 lumens I believe
NutSAK
Flashlight Enthusiast
Understood, but a warm emitter will be considerably lower output at the same power. The lower the color temperature of a white emitter, the less efficient the emitter is. At the same power (V x I), a neutral emitter will have lower output than a cool emitter, and a warm emitter will have even lower output than neutral. This is due to the increased doping of the emitter required to lower the color temperature.
Therefore, I don't believe it is possible that if cool white M61 requires 800mA to produce 450 lumens, and a neutral white M61 produces 400 lumens at the same power, that a warm white M61 can produce 360 lumens at 650mA.
Therefore, I don't believe it is possible that if cool white M61 requires 800mA to produce 450 lumens, and a neutral white M61 produces 400 lumens at the same power, that a warm white M61 can produce 360 lumens at 650mA.
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thermal guy
Flashaholic
Yes. Agree. 650 does seem low.800 might work.
