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You can get down that low with a DDL driver and LM317, but that is hard to fit inside a pen. Miniar is the only thing in that current range small enough to fit inside a pen, but they are hard to make. Something with my tube of solder paste it's too runny

Yes, that big metal capacitor. It's probably safe, but short it with a screwdriver to make sure.

Re: FS: 4A testload Real diodes more accurately represent the characteristics of a laser diode.

Yes they do, but not as brightly. They can also exhibit some plasma globe like effects.

New one, for me

They claim to be 70mAh, sitting on the shelf, never charged.

I'd say 14500 is the max allowed to be considered a pen. There is also a length range below which it becomes a keychain. I bought some 10180 cells hoping they would fit LR44 keychains, but they are just a tad too large.

On mine it's the same. It's hard to see without splitting the case, but it looks like a TEC.

Manual mode with the highest f and shutter speed, lowest ISO and work from there Bracket and filter with a welding mask. The mask goes in front of the camera, not the laser or it will start burning.

It seems to be a good indicator of tube health. I have been running it at 6A for about 10 minutes around the middle of the run and idling the rest of the time. I think you recommended doing that somewhere. Get it, moth balls?

I think the Optiarc have the flat diodes in them.

:bumpit: Took the argon out of moth balls today The 502nm line seems better than usual.

Re: FS: 4A testload Some questions Is that a wirewound resistor? Who soldered that board? What is the other resistor for?

Pen building Instructable Laser Pointer

The e-Mail confirmation isn't working.

We need a page for each diode with the recommended current settings and graphs, if possible.

I got harassed and threatened with arrest doing that. How to Flex Your Rights During Police Encounters

Re: GB | 515nm Diodes I think it's supposed to be a PL TB450B. That would sound about right. They will do about 2W @ 1.8A IIRC.

Don't feel bad LtKP. I have a USSTCC board sitting on my table that is as clean as the day it arrived.

It snot exactly bouncing off the moon, but it is something.