Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Recent content by vegasf6

  1. V

    DIY LPM interface to DMM, possible?

    Hi guys, you will have to pardon me, I have been absent for quite some time. When I started visiting there was quite some debate on whether or not it was even possible to use flashlight driver to power laser diode (which I was proponent for) and the only LPM available where commercial options...
  2. V

    My first laser build - 445 *Pic heavy*

    Unfortunately no. I have found my self wishing the same from my 10 diode test load I built with 1N4936. That is really a beautiful test load you built there alright. If you do a run of boards I may find myself wanting one. Why don't you consider having your PCB maker drill the holes though.
  3. V

    IR Filter

    Direct diode lasers don't emit IR? Well that's good to know. Are your filters BG38 or KG2 glass as mentioned above? Or another type? Thanks for the link by the way. VegasF6 Oh P.S. I just promoted your website earlier today :)...
  4. V

    IR Filter

    Bump for a super old thread. Can anyone point out a good source, (up to date) for an infra red filter I can use while measuring power with my LPM? Can I use the same one for green, red, UV, 440nm 405nm etc? I don't expect it would be a good idea for 808s or IR lasers :0
  5. V

    Welding goggles?

    I did some testing with a PHR at 100 mW and an A140 diode at 330 mW. I don't have my A140 heatsinked as well as I would like at this point is why I didn't test at higher currents. The Jackson Nemesis shade 3 and shade 5 both blocked enough of the light/radiation that the LPM read zero with the...
  6. V

    Welding goggles?

    Therein lies the problem. Possible flawed testing methods. What wavelengths is the thermopyle in my laserbee capable of testing? Despite the fact the Jackson googles claim to block 99.9% of UX and an unspecified amount of IR radiation, could there be some light not visible to me and not picked...
  7. V

    Welding goggles?

    After getting a reply to my prior question, I would be happy to do this as well. Some feedback about the best possible testing scenario would be helpful.
  8. V

    Welding goggles?

    Same question, me too Well, I don't know if it would be better to start a new thread, or tag onto this one, but I have the same question that has been asked over and over again, welding glasses/goggles for red laser protection. Via searching on the board, it appears the answer is always no...
  9. V

    Driver Design.

    Well, hows the testing going? Very curious to see how those I.C.s handle output less then minimum rated voltage.
  10. V

    Driver Design.

    I see what you are getting at now. (I only put one diode in the image, but of course you could add more) That is essentially what the flashlight circuit boards from places like DX do already. However, I don't think it will allow input voltage to be any higher as the amc7135 still must regulate...
  11. V

    Driver Design.

    Not sure what kind of mess this post started and not interested in the politics. As to the electrical part of this what you are saying doesn't make any sense. The 7135 is a linear regulator that must be in series with your load to operate. How is it that you would supply ~6V to the IC but a...
  12. V

    Driver Design.

    Instead of taking the time to argue with you about that, I would prefer to discuss your comments on the 7135 IC. What is your theory on how you will be able to dump a few ma or regulate the output of a linear regulator?
  13. V

    Driver Design.

    Oh I understand what you are saying. In fact, we are saying the same thing, that there is no special reason to use that cell when a silicone diode could be used anywhere in the circuit. Benm said so in the 3rd post, I was just pointing out for the sake of discussion some facts about the battery...
  14. V

    Driver Design.

    In addition, with those particular cells, care needs to be taken not to exceed 1 amp current draw or one could easily smoke the diode, rendering them useless ;) I have links to other RCR123 discharge graphs if you would like to look at them, but not for those cells. Here is some very basic...
  15. V

    Driver Design.

    FYI those are li-co cells with a diode attached to drop ~.6 volts. They aren't lifepo4. And they charge with a regular 4.2V lico charger. And, FYI also don't believe any claims of 900 mAH from a 16340 battery, it physically isn't possible in that size, unless the battery is grossly oversized...




Top