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  1. J

    How do I reduce amps??

    you need a current regulator.At that moment i don`t have ideea for a IC but try to find at maxim,TI or other sites look out at http://www.ti.com/product/bq24450 have adjusting output, and regulat both voltage and current
  2. J

    List of MOD coverters for newbs :)

    yep for step-up need a good battery, AW IMR high drain it`s the best
  3. J

    List of MOD coverters for newbs :)

    and mp2307 :), kis33 module from ebay, able to use with 2 battery series connected
  4. J

    Electronique of Lavatube.(picture)

    it`s same to be a cheap mod vv this lavatube. Have a big microcontroller for a few function, and have step-up "problem" :), with atty under 2 ohm work in linear mod and output voltage drop to 3.6V.
  5. J

    EverCool Variable Voltage Mod

    If is about ptn4050C, that module is not protected to short-circuit and at first damage atty.....
  6. J

    Touch switch on a 4050c booster chip

    A good ideea and works is to command a N channel with a P channel mosfet, like in attach :)
  7. J

    mp2307 buck module aka KIS-3R33S Z with 2x 10440 in a 9v batt box mod

    I use that IC,rebuild all in a custom PCB.It`s a very good switching regulator. Have some advantage this IC: small, work without external shottchy diode, IN/OUT small SMD capacitors.My PCB measure 20mm x 20mm :)
  8. J

    Thinking about building a box mod...

    to use linear regulators, such NPC 630 A from madvapes, is not a good ideea.You waste a lot of power on heating. much better is a step-down switching regulator like lm2576 or lm 2596.On ebay you find a lot of module with this IC. But the best is mp2307, you find some kis-33 module on ebay...
  9. J

    3.7 Mod Box Voltage Drop

    yep i think so. An 1.5 ohm atty drain from source around 1.4A - 1.5 A, a 14500 have around 900 mah, because of that V out drop down :)
  10. J

    3.7 Mod Box Voltage Drop

    uff I understand.. you have a pour battery and don`t offer enough current, try to use AW 18650 IMR the best, or 18650 2400mah from China.
  11. J

    3.7 Mod Box Voltage Drop

    first what kind of regulator you use on your boxe.I think is a boost convertor with 1 battery, with what IC you made that boxe? Because of IC or a wrong connection, your booster don`t work :). A good chose is PTN04050C from Texas Instrument
  12. J

    Stealthy 9v Box

    nice :) good job..What kind of battery you use for this mod? And where you find that enclouser?
  13. J

    Ti-8100 & vv

    yep that multi turn trimmer is all you need. good luck :)
  14. J

    My newest mod box VV

    it`s comfortable but you must be careful anyway, tends to lose from hand :D
  15. J

    My newest mod box VV

    From Ebay 1pc 18650 Battery Case 2 x Parallel Connection DIY Case | eBay China stuff :)The part of enclosure, where i put 510 connector is fragile need to be doubled with some other plastic or metal part
  16. J

    VV mod help

    for step down you can use only 2 battery, 3 or 3.7V each, for step-up use one battery is simple :). you want to use a linear regulator for this you need 2 baterry li-ion,connected in series or an 7.3V pack li-polimer.
  17. J

    VV mod help

    for minivoltmeter you can buy from ebay 1s-6s LED Lipo Battery Voltage Checker Indicator Tester | eBay. This is ok.
  18. J

    My newest mod box VV

    @BJ43 it`s true..this LM2596 have shortcircuit protection, overtemperature protection..it`s very hard to damage that IC. until now i made a lot of mod box in 3xAA box with this and work very good, and is a cheap IC aprox 1 $ for 1 pc.Work well with 1.25 carto :)
  19. J

    My newest mod box VV

    anyway work`s grate..It`s possible tu use other IC but this lm2596 have a good performance at a lowest cost :) uff i forgot to write on the schematic electrolithic capacitors to IN and OUT :(, works fine with 100uF SMD at IN and 220 uF SMD at OUT
  20. J

    My newest mod box VV

    about tube mod.Mechanical work was made today.Next i will make electronics stuff.This tube will be with battery charger PCB for two li-ion, and 9V/1A from an external power supply. It`s a hard work on copper tube :D And the schematics :D