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Yep you have the 100B, or some variant of it then. The A is a lower voltage variant with some minor changes to run the 39 and 56 models (and the 112 as it's just 2x 56s end to end). the B has a few tweaks to run the 74. Later the 39s were discontinued and the supply was edited from analog to...

Yeah the only other person I know who has one i think is daguin, And I don’t think he’s active anymore. And his is a liconix tube anyway, And they function slightly differently

You're in luck. :) I'm kinda the resident gas guy, and I rarely look in the help section, but today I did. I actually maintain several HeCds. (I may even be the only active member who still has some of these that are working?) Yes, if the pressure is high it can cause issues, but omnichrome...

It’s quite a difference. That’s also why I’ve never offered them to anybody. Those tubes were anywhere from $800-$1200 new, And the larger ones were upwards of $2000+. Pure He3 isn’t cheap unfortunately, And that nowadays is what makes up the bulk of the cost. Once upon a time they were quite...

Story of my life

Yep. They’ve had stuff in the works for a while now. Its exciting, but i’ll still always love the glow of my henes! Id sell one of the little ones maybe if the price was right, but it wouldn’t be cheap. Probably 500+

Yeah I love my orange HeNes. They're among my favorites in my collection. I have a very lively 3 line that does over its' 5mW max rating. it's pretty amazing. I also have two little 6" ones floating around somewhere....I should dig them out again....

Who knows... it’s an easy mistake to make. They operate using the same principles, so that might have something to do with it. They’re basically similar technology....in fact they’re essentially two different approaches to the same thing...

Also, the Necsels are not OPSL, they're VECSLs that are doubled. they work similarly, but are not the same.

I’m betting I could do it. Lol i’d actually probably turn one of these into a lab laser. And to be honest the main reason I didn’t buy one is because I don’t particularly need one, but I’m more than a little interested from the science side. I usually as a rule of thumb also don’t take apart...

I cant do much beyond speculate, as i dont have one in my hands. (I know, I was late to the party) I could do testing on the crystals and diode, but only if i had one to dig through and play with. The 565s are probably similar. 561 can be made several ways as well. Its hard to be conclusive...

I’ve been poring over materials while I sit at work today. And while I haven’t kept a super close eye on the thread I just want to put some of this information out there if it hasn’t been put out already. The most likely pump diode candidate seems to be a 976nm 1.5w pump rated at 1.5v at Iop...

time to bust out the oscilloscope? :) In all seriousness it makes me wanna put this on my lab-grade driver.

yeah. this gives us alot of information ironically. so yeah that probably is true it might be something a bit longer. might search through diodes later and see if I can find anything. I dont have one of these to test on unfortunately

like i said, I'd suggest finding a way to measure the voltage to the diode. if it's truely an 808-ish pump, it'll only draw about 1.8V-2V. 2.2 tops. if it's a GaN of sorts it'll be about 6V.

Sounds pretty solid to me. I used to have a laser with a similar driver when I was first starting out. What I ended up doing was just putting little passive heatsinks on the transistors for more surface area and then took some aluminum roofing sheeting (since it's thin and easy to cut with...

Yeah, the problem is that like yours, it always comes out green in pictures lol. That and I wanna do it justice. I've just not had the time to type up the whole thing, as it'll end up likely pretty long and huge. I used to type those long ass things at work, and I can't do that anymore. It's...

affordable yellow~ how nice. It's growing ever closer. Neat little laser. Reminds me I still need to review my yellow Genesis. Maybe i'll get around to that later.

Yes, thats actually why it is illegal to point them at other people, especially a peace officer, as they may assume they are going to be shot at. (Dangers to eyesight aside)

pretty much same here. but taking into account its intended use as a rifle sight, half an hour on a he-ne isn't terrible. but obviously nowadays you can run a cheap red laser diode for times approaching all day now. how far we've come! I was having similar thoughts. especially as out in the...