Is that how you calculate the laser CRX? I have a blue one that uses 2 18350ās, pulls ā¦ wellā¦ all of a sudden I canāt be sure what it pulls, I thought it was 3.3A at the tailā¦ itās supposed to be like 3W or something. I know it is quite strong, will burn a yellow jacket nest at 25-30āā¦ it doesnāt catch on fire due to the larvae inside but it smokes and smolders. Itās kind of difficult to take the tail current reading because the beam will burn things, guess I can take it outside and lock it down in a bench vise pointed up into the sky, take the reading that way to be on the safe side (provided thereās no airplanes overhead)
My green laser, with a just measured .465A at the tail current drawā¦
This one is using my DBC-04 battery tube repurposed and with a marine bronze head. I now also have a SS aspheric focusing lens on it.
House is white, I wear cotton, I was born in August when it was 111Āŗ, much prefer heat to cold, have worked outdoors the majority of my life. When I delivered building materials, I drank some 3 gallons a day. A gallon of sweet tea to start with and filled up the jug twice with water after that. All in a dayās work.
A very quick reading on my blue laser shows 1.58A at the tail from 2 Aspire 18350ās. So thatās 1580mA, right? So would that be multiplied x 8.4V? For 13272 divided by 1000 for 13.272mW? Or 1.327 Watts? Am I figuring that wrong?
When I got it I was told it had been used pretty hard and probably wouldnāt make itās ānewā ratings of 3.3W. So this 30% level is probably close to correct. Itās a 9mm Nichia diode that cost several hundred dollars when new.
Yeah, itās kinda scary. A silent gun, as it were. I donāt keep cells in it and keep it locked upā¦ much like a firearm.
The green one wonāt burn things, still, I donāt āplayā with it as it is really difficult to find a place to shine it since the green carries so stinking far. Iāve been able to see the green beam hit a telephone antenna/tower 2.2 miles from here.
Edit: Of course the lasers are dangerous, but when you grow up shooting guns you know the danger is relevant, retina perhaps but not so much skin from any real distance, quite unlike a firearm. My gunsmith buddy told me a long time ago that a laser was a good training tool for proper firearm safety, being able to see the beam of light shows you just how difficult it is to point a gun in a safe direction. Really expands the mindās scope on how to handle a loaded weapon. Obviously, neither are toys to played with or handled lightly.
Too funny
But do be careful with these things.
Reminds me of taking a tail reading from a fet triple and having the bezel resting flat down on my legā¦ :laughing:
I studied up on lasers when I first got one, the mediocre strong green lasers can cause damage to the retina for miles, like 7 miles, and can be quite disturbing for 11 to 14 miles. At distances over a quarter of a mile or so, though, the auto-reaction to blink can be sufficient to prevent harm, irritation perhaps but not a burned hole in the retina. Thatās on a 200mW green laser, which is what mine is supposed to be rated at. Well, my other one. This one is from a more reputable source that guaranteeās it to be 50mW at a minimum. I think I paid around $60 for the green diode.
I got the blue one on a sort of trade, as a used laser. Like I said, new the Nichia 9mm at 3.3W is over $300. Itās in a solid copper housing.
In the end, pretty worthless to have as you canāt do anything with them if you have a conscience.
The color is mesmerizing, and thatās a real problem as everyone that seeās it wants to see more of it which is bad. I took it to my Sister-in-laws and shone it into their swamp area (Southern Mississippi) and she was blown away by the color, tried her dangest to talk me into taking it to the 4th of July celebration and showing it off. NO! No can do! Itās wickedly strong and around a crowd of people itās an accident waiting to happen. But thatās the thing, the color really sucks you in and makes you want to play with it. So Iāve shown it to scant few and it stays locked away the vast majority of the time.
If it werenāt so pretty I would have disassembled it and destroyed it several years agoā¦ might yet.
Iām more at risk cutting bits of metal with my angle grinder or driving on the highway with hundreds of others than holding a laser in my hand. Much like a gun I would not point it at myself or others itās fairly common sense. This isnāt the place for this, however. Nice laser DB :+1: I look forward to how white laser technology could impact the long-range flashlight world.
You donāt even need to point it at yourself to be blinded. Even a slightly reflective object is enough to burn your retina faster than your blink reflex. Laser protection goggles also only block from the front, it is still possible for the laser to enter your eye from the side.
Iām glad you mention this because all this gun comparison doesnāt really do it justice. A laser is constantly firing and reflecting off crap as you move it, unlike a gun.
A laser may merely burn skin or clothing, while a ricocheting bullet rips people a new arsehole! The laserās only real claim to danger is a direct retina hit, which is of course a real danger but not so easily accomplished whether by intent or by accident. I have had the tail switch accidentally on when loading cells into my blue laser, the laser fired within an inch of my hand and burned a tiny blister that stung for hours. Had that been a gunā¦ well, obviously Iād have a hole through my hand AND the very real possibility that an innocent bystander could have been hit by the bullet after it left my hand. The laser goes through people to hit people behind them? Like, NOT! Depending on the firearm and the situation, many people and/or property are at risk for quite a distance from that one accidental discharge. Case in point, pray you never accidentally fire a .454 Casull, a 300 grain bullet that travels 2000 feet per second!
Safety goggles that wrap around protect the eye from all directions, depends on what you purchase I guess and if you even wear them at all. I normally donāt wear them as they render the amazing beam invisible which makes it all a moot point. I HAVE been wearing quality goggles while frying the yellow jacket wasps right outside my window as Iāve been getting them through the glass.
I donāt kill wasps with the laser for fun or meanness, I am highly allergic to them and to leave them in place could get me dead instead of them. So I eradicate the ones that build nests too close to where I make ingress. I leave many thousands of them alone in spite of the danger to me when I mow.
Itās a 9mm Nichia diode that cost several hundred dollars when new.
