Recent content by MacDoktor

This is very cool. Unfortunately, I have to buy one now. :whistle:

I was just wondering if it was a more complex topology than a "simple" RC filter. It looks like three in series but I wanted to be sure.

Now I see. The BNC is on the cathode. What kind of filter network is that? (obviously lowpass).

I see a number of holes on the sides. Perhaps they were used to hold it in place.

Just curious. It's so weird that I had to ask. You're looking at the "We found something similar" auction. Click on the "View original item" link. I have quite a few HeNe lasers and power supplies. I bought them some years back when the prices on ebay were a bit more reasonable. I have three...

This is my first thread here (I think) so go easy on me... I'm baffled by this homemade lab laser on ebay: Unknown/Like "HeNe Laser Kit -Box" From College Physics Lab Education Research It looks like a tube with a brewster window which would require an external mirror but I can't figure out...