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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by cuisma

  1. C

    LED Strip (SMD5050) Unexpected Current Measurements

    Well, my original intention was, to some degree, to adjust the length of LEDs in the costume based on the battery size it'd require - i.e. if I could get away with more length at a given physical battery size/cost then I would, otherwise I would shorten it. So I didn't really have an explicit...
  2. C

    LED Strip (SMD5050) Unexpected Current Measurements

    Alright, that makes sense :) So if I'm understanding correctly, 3 AA's would just run a 5V strip for (3/8) as long as 8 AAs would run a 12V strip. In which case, just for convenience, since portable cell phone chargers are so much more plentiful than 12V battery packs, it seems 5V would be a...
  3. C

    LED Strip (SMD5050) Unexpected Current Measurements

    Not really feasible in this case. I'm doing something like "electrofur" (http://www.electrofur.com), so it needs to be bright enough to show through fabric & fur, and then some (as it won't be used in pitch-dark).
  4. C

    LED Strip (SMD5050) Unexpected Current Measurements

    1) So then, I guess that means there actually are different types of 5050's? My understanding just from reading forums etc was that they're "all" 12V. This makes me think that's not actually true...? 2) As a follow-up, since I plan to run it from "small" (aka not car-) batteries, 4.5V would...
  5. C

    LED Strip (SMD5050) Unexpected Current Measurements

    This is all a bit over my head. In super-layman's terms, I'm just trying to figure out how feasible it would be to power these LEDs off of batteries, in terms of determining how large a battery I'd need to power them for a given period of time. To add to confusion, I just found a seller...
  6. C

    LED Strip (SMD5050) Unexpected Current Measurements

    So, I'm still really at a loss as to how to figure this out. I'm obviously a beginner, this is just my first project. How can I choose the appropriate size Li-Ion battery? I will say that I've definitely run these LEDs off the AA's for *much* longer than 6min already, and they're glowing...
  7. C

    LED Strip (SMD5050) Unexpected Current Measurements

    1) What I didn't understand is why the spec says it should draw 1.75A, but it's only drawing 500mA. I think from your reply it's because the AA's aren't capable of supplying that much current, correct? 2) If so, what problem might arise from trying to run these LEDs off of this AA battery...
  8. C

    LED Strip (SMD5050) Unexpected Current Measurements

    Hey all, I'm working on a small DIY project, and am a bit confused about the current draw I'm measuring from a roll of SMD5050 LEDs. The full roll (150LEDs, 16ft/5m) is supposed to be 21watt/12V (as stated by the seller, and from other references I've found online). As I understand it, this...

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