Recent content by lava

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  1. L

    BB Nexgen Max V?

    The Sandwich Shoppe website states that the max output of the BB Nexgen boost is 6V. I have a UV LED with a Vf of 8V that I'd like to put in a flashlight, but only running at 500mA; is there any chance that a Nexgen at that current could provide 8V? If I went ahead and tried this, and by chance...
  2. L

    Boost Circuit Schematic

    Thank you! And what topology would you use with the LT1618?
  3. L

    Boost Circuit Schematic

    The BB Nexgen boost, that uses that part, can take an input voltage up to 6V according to the Sandwich Shoppe site.
  4. L

    Boost Circuit Schematic

    I'd much rather buy a driver, but there are no 17mm (or any other size) drivers that can support a Vf of 8V up to 700mA. Unless you know of one. I'm working with high Vf UV LEDs here.
  5. L

    Boost Circuit Schematic

    Thanks guys, very helpful info. The reason I asked about using a voltage boost IC to drive constant current is that the BB Nexgen from the Sandwich Shoppe uses a TPS61030 which appears to be a voltage boost on the datasheet, and yet the BB Nexgen board has very few components on it and strikes...
  6. L

    Boost Circuit Schematic

    I would like to build my own boost, something that runs off a single 18650 and can accomodate an LED with 8V Vf and up to 700mA current. I have a BB Nexgen from the Sandwich Shoppe that I'm attempting to reverse engineer, but there are a couple of things I haven't been able to figure out yet...
  7. L

    BB Nexgen 500 Question

    Thank you! There is also no wiring diagram for the Nexgen 500 on the Sandwich Shoppe site. Do you perhaps have one?
  8. L

    BB Nexgen 500 Question

    Just found a few cans on the Sandwich Shoppe, but no dimensions posted with them so I can't tell if they'll work for my purposes. Would love to know of other sources. Searching for "can" here on CPF brings up way too many unrelated posts.
  9. L

    BB Nexgen 500 Question

    Ah, makes sense. Where is the best place to get cans? That short Ecan looks like just what I need.
  10. L

    BB Nexgen 500 Question

    Ok, got the Nexgen in the mail... the components go all the way to the edge of the PCB, so it can't sit on a rim inside a driver cavity like I'm used to with other drivers. How do people go about mounting these in a flashlight if that's the case?
  11. L

    17mm to 14mm driver adapter?

    Wouldn't I want to retain that 1mm lip so the driver stays in place? There are 17mm OD x 14mm ID sump washers on eBay, but wouldn't a 14mm driver fall through a 14mm hole?
  12. L

    17mm to 14mm driver adapter?

    This looks like the right size: https://www.ebay.com/itm/GENUINE-Sump-Plug-Washer-Copper-12mm-x-17mm-x-1-5mm-Pk-10-Connect-36781/322474972589
  13. L

    BB Nexgen 500 Question

    Will do!
  14. L

    17mm to 14mm driver adapter?

    The driver I've found is 14mm, can't really sand that down to 17mm. Unless you have a different, larger boost to recommend?
  15. L

    BB Nexgen 500 Question

    Thank you!
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