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nfhiggs's Recent Activity

  1. nfhiggs replied to the thread I need More Light.

    yeah, should work fine.

    May 28, 2017 at 10:01 PM
  2. nfhiggs replied to the thread I need More Light.

    Ok, the data sheet I looked up indicated 36V.

    May 28, 2017 at 10:00 PM
  3. nfhiggs replied to the thread NOOB to COB Need Help.

    The drivers will generally have an adjustment method.

    May 28, 2017 at 9:58 PM
  4. nfhiggs replied to the thread What's the interest in growing with retail store LED bulbs?.

    $35 for a 13W LED Spot/Flood is ridiculous. Get out of Home Depot. Try looking at Batteries+Bulbs. $9.99 for 16W 1500 lumen bulbs:...

    May 28, 2017 at 9:17 PM
  5. nfhiggs replied to the thread Ripple voltage.

    OK. I will have to stand corrected here. After thinking about it, and referring to my old textbooks (which did not really address this)...

    May 28, 2017 at 8:35 PM
  6. nfhiggs replied to the thread Ripple voltage.

    AC passes through a cap VIA the charging and discharging of the plates. Just as it passes from primary to secondary via the magnetic...

    May 28, 2017 at 7:15 PM
  7. nfhiggs liked haze010's post in the thread Sun boards or quantum boards?.

    How is this any different than HLG guys seeing Nextlight and doing the same thing with the newer samsung diodes, nextlight was out long...

    May 28, 2017 at 6:28 PM
  8. nfhiggs replied to the thread Good cheap LED for a 2x2 space?.

    "Good", "Cheap" and "LED" is one of those cases where you can pick any two....

    May 28, 2017 at 6:12 PM
  9. nfhiggs replied to the thread Ripple voltage.

    But it actually IS the same - that's why reactance is measured in ohms. Ask any electronics engineer if he has to account for reactive...

    May 28, 2017 at 6:07 PM
  10. nfhiggs replied to the thread Ripple voltage.

    Nope. Reactance is most certainly real - it is impedance to AC current just like resistance, and will ALWAYS produce waste heat in the...

    May 28, 2017 at 5:24 PM
  11. nfhiggs replied to the thread Ripple voltage.

    You're thinking of the interaction of a capacitor and an inductor in an oscillator circuit - If you measure the AC current between them...

    May 28, 2017 at 5:21 PM
  12. nfhiggs replied to the thread Ripple voltage.

    and in a capacitor its (current) x (internal resistance + reactance) squared

    May 28, 2017 at 5:03 PM
  13. nfhiggs replied to the thread Ripple voltage.

    That's simply not the case. Total heat dissipated by an inductor is (current) x (resistance + reactance). Edit: correction, its current...

    May 28, 2017 at 4:27 PM
  14. nfhiggs replied to the thread wire for vero29 build.

    I use 14 gauge speaker wire from Frys. 7.99 for a 25' roll.

    May 28, 2017 at 3:54 PM
  15. nfhiggs replied to the thread Ripple voltage.

    Same way an inductor burns power through inductive reactance - to the current flow, ohms are ohms whether its reactance or resistance....

    May 28, 2017 at 3:42 PM