Recent content by ultimatekaiser

yeah the tube is likely fine unless it is leaky or broken. it's rare for most coaxial tubes to go bad just sitting though. I'd be inclined to check the psu and that you're powering it correctly. I'm with cyparagon. complete board views would be helpful. It's likely a simple little supply.

It all just depends on what you need from your meter. They're somewhat inaccurate and slow over the long term. But they are plenty adequate for most hobbyist applications. For measuring your relatively high power blue build that you’ve just made or something like that they're plenty fine...

Well considering most of them are 1K+ new, even 500 isn't bad for a working one in calibration tbh. Its just that most people are on a budget and don't want to spend that much. We used to pay 4-500 all the time for them when I was new to the forum. Anything less was a steal. I think i paid $375...

Out of curiosity, Did you ever get this working? I actually just stumbled across one of these (though mine is the smaller tube version (there are two versions of the same model) I got it working with no issues. I can confirm it is indeed a 12V supply, however like alot of other lasers of this...

Yes. a green laser isn't really green at first it's actually 3 lasers in one! which is why they are more expensive than diode pointers. ;) They're an 808nm IR diode pumping a crystal to get 1064nm IR light, which is then frequency doubled to 532nm light which we see as a bright green. The...

the Viper is the 55mW green I assume? (It's been a while) I've a yellow version and it works fine with both AAA primary and rechargable cells. Though on the NiMH batteries it tends to die faster due to the high current draw. Primaries will often work better due to their higher initial voltage...

Yeah about that age, and a bit older on occasion. But that’s a topic for later. I Don’t want to De-rail the thread. :)

This is pretty much my thoughts on the matter as well. There is no replacement for good safe practices and caution. A good life vest and a waterproof, very long throw flashlight is probably the best solution, but ultimately, like a lifeboat or anything else, they are a precaution. The best thing...

I'm at a pretty strong disconnect with this place now due to my inactivity and alot of the members i was friends with not being around anymore. I'm still around though. I just keep a silent vigil. People know how to get ahold of me if I'm needed. My expertise is mostly in gas, and few people...

yep. healthy output for one of those is usually around 3mW of red if the output mirror is clean iirc.

Yes. I helped make one. There's a very similarly designed one out here I used to run. It's been long since retired though, and it does orange not yellow.

That's why dye lasers were used for so long. They're very versatile....just really messy and large.

It's not that we want to dissuade you. But I think everyone here just wants you to understand what a pain it is. Greens are very easy and forgiving. but if you want to make a yellow you'd need your own mirrors at the very least, and they would not be cheap. any other parts you would need to be...

Making one isn't much more complex than a green. But it requires lots of specifically made parts and is much more tempermental. Buying the parts individually to try to make one is often far more expensive than just buying a retail unit. It's not like a green where the parts are common and you...

of course you cant run a transformer on DC. *rolls eyes* gimme a break Cyp. The answer is indeed in the above post. As that's the only way to really modulate a HeNe. You can't fully start and stop it, as that'd be very hard on the tube and starting circuit, like you would a diode. It is analog...