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I finished modifying a second 20A Diode Test Load replacing the original 20ETS08 diodes with insulated tab diodes VS-20ETS08FPPBF from DigiKey: I mounted them directly to the heatsink using Arctic Silver 5 thermal paste: Then I ran some tests measuring the amount of voltage across...

Re: Ultra Expensive loss!!(funny) I found this. Does it help, maybe they're still useable?

I've also used a technique using a CCTV camera or cellphone to determine if there is IR, it won't tell you how much. If there is only a little IR, you may not see anything so be aware. I originally used this technique to compute the beam angle of various IR LEDs for another project. With the...

It can vary based on many factors from design, construction, quality, etc. Here's an article from SPIE. I've seen people here on LPF advertise IR filters at reasonable prices so you can measure "with" and "without". Having IR protection at 808nm and 1064nm for 532nm DPSS laser pointers is...

Note that 532nm laser are DPSS lasers, not direct diode, which means IR is generated during the process that ultimately results in a 532nm laserbeam. If it's not filtered out then you could very well be measuring that power also. Labels are readily found on Google, here is one on eBay, etc...

Well you are in VA. Lots of agencies nearby ... Shameless repost ... again ...

I've noticed the same thing. I also noticed that when it's hot, my face can sweat and a lot more light can get reflected off my skin. So I keep a towel nearby.

FYI: I snipped Pin-2 from Pin-1 and electrically it became this:

Welcome Thunder22. p.s. I like how you make cars. :yh:

Anyone think of taking this on instead? Something production level, commercial quality. From what I've seen, there's is plenty of talent here to pull that off technically. Would take a small financial commitment up front to produce the first few units but there are other ways of making money...

How did they do that, change the name of the thread? Nevermind.

No compensation, just enjoy fiddling/fixing sometimes. People using this to test their drivers might only be looking at the current and don't realize the voltage is only from one diode. However I find it surprising that someone would test a constant current driver without also looking at the...

Might as well add my experience to the fray. I had the same multiple incorrect tracking number experiences, missed delivery promises/predictions, and kept hearing about 'guaranteed delivery' so I finally asked what the guarantee actually provided. In other words, if what the guarantee backs...

I got the insulating kits today, installed them and tested the 20A Diode Test Load again. Everything works. Mine runs about 0.1-0.3V higher than the values in the table in the manual for loads up to 3A. The screws that come from Survival are too thick to fit through the insulating washer...

Going blind sympton ... And if the symptoms are present then there's still some hope ...

Re: WTS: 1.4w 470nm pen, 1.2 w 445nm pen, Jet lasers Ple Pro 473nm, laserbtb HL300 I'll take both of these if still available. 3)Alien Laser 1.5- 2w depending on lens 470nm laser Pen. Comes with 3 element lens Diode is NDB7675 $120 with in usa (Battery Polarity: positive toward aperture, neg...

My sentiments exactly. Nice work putting in the effort to draw it up. I prefer dual button hosts too and your post motivated me to draw up a couple diagrams but mine are case negative. It does what the OP's diagram does - when the tailcap switch is switched ON the LED in the momentary lights...

Could have been cheap tape, too much tape, or a number of things but no, it shouldn't shred off. You might be right in that the excess simply shredded off. For use on laser diode barrels, I typically use just one wrap. And no biggie if you can't find the spring (assuming one was there in the...

Excellent. Because when it comes to your eyes, there will be no pain and ...