Recent content by JWP_EE

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  1. J

    Nitecore Tube - battery is not charging. Troubleshoot / fix

    My Tube doesn't work while being charged. If it is on when I connect it to charge, the light will go out - blue light goes on - but it will go back on again when I disconnect the charge.
  2. J

    [Review] Lumintop SD4A ( 4xAA )

    It looks like a re-design of the Lumintop SD10
  3. J

    Deal-of-the-Day Finds

    Nitecore Tube at Banggood for $6.99.
  4. J

    Okay, So What is Your Oldest (Still Working, & Using Weekly) Light?

    CMG Infinity Task light. I bought it in 2000. I use it every morning when I get up to check the outdoor temperature on my indoor/outdoor thermometer.
  5. J

    Lumintop SD10 (XM-L2 NW U2 - 1xD 3xAA 1x26650/32650) Review: RUNTIMES, BEAMSHOTS+

    Banggood. They also list it as 3XAA carrier. I don't know if I was just lucky or if they have changed the carrier and never updated the description. $50 and delivery took 2 weeks.
  6. J

    Lumintop SD10 (XM-L2 NW U2 - 1xD 3xAA 1x26650/32650) Review: RUNTIMES, BEAMSHOTS+

    I just received my second SD10 and it came with a greatly improved AA carrier. The new carrier holds 4 AA cells and is constructed of all metal. It is two metal discs on each end with insulated rods between them. Each metal discs has an insulated copper disc in the center and is the positive...
  7. J

    Can anyone explain how power factor relates to power consumed vs. cost per kwh?

    When the power factor of a device is 1 the load is purely resistive and the current used by the device is in phase with the voltage. When the power factor is less than 1 the current is out of phase with the voltage. The power consumed by the device can be calculated by the voltage times the...
  8. J

    New lights at Home Depot just came in

    My local store has dropped the 1500 lumen light to $29. Time to buy one.
  9. J

    New lights at Home Depot just came in

    I see that the 1000 lumen light has dropped to $25.
  10. J

    Cree has a new light bulb available now, the 4flow technology

    The lifetime is 25,000 hours... the same as the other bulb. The warranty has just changed. I like the fact that there is no dark spot at the top of the bulb.
  11. J

    What was your first 'real' LED Flashlight? Have you still got it?!

    CMG Infinity Task light. I bought it in 2000... I still have it and still use it. I made my own red LED flashlight for Astronomy use in the 70s from a two AA penlight.
  12. J

    Cree A19 9.5w 60w 800lm 2700K for $13.97

    I bought four of the 60W 2700K bulbs at Home Depot yesterday for my bath rooms. I paid $4.97 each. I may have to buy some more at this price. I live in South Jersey.
  13. J

    Fasttech Shipping time?

    I ordered some stuff on FEB 6th. Got an e-mail it shipped on FEB28. I am still waiting.
  14. J

    *new* Lumintop SD10 - 1D cell light

    Is anyone else having an issue with the switch? I have had the light about 3 weeks and the switch doesn't always work. When I press the switch to turn on the light and hold it for at least 2 seconds the light doesn't turn on even though the switch lights up. I have had to press on hold for up to...
  15. J

    Lumintop SD10 [XM-L2, 1xD or 1x32650 or 3xAA] Review

    Re: Lumintop SD10 [XM-L2, 1xD or 1x18650 or 3xAA] Review I got my Lumintop SD10 a few days ago and decided to make some current measurements. I used an older lab supply that has an analog current meter with 20ma divisions at the low end. I used a digital VOM to measure the voltage...
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