Hey John, Where did you hear that the kGos were using PWM? I think I've heard that before somewhere but I'm not sure where. I started thinking about that and don't really understand the point of using PWM in a fixed voltage setup. It occurs to me that it would be less complex and more cost effective just to use a decent regulation circuit. I dunno. I've seen a Twist metered on a cheap in-line voltage meter, which tells me that it doesn't use PWM, so why would a fixed voltage kGo? On Hoosiers site he's also using an in-line meter on an SLB kGo. Unless it's a very recent change but, again, what's the point?
I'll have to look into it a whole lot more, and I don't fully yet understand the science behind PWM, but in crude layman's terms (which is what I am, a layman - and sometimes a crude one at that); it seems to me that it might be somewhat like the electronic equivalent of using an impact wrench to loosen a nut instead of one constant force of equivalent foot-pounds. Just like the impact wrench delivers many rapid blows, the PWM might do the same. Just as the many rapid blows that the impact wrench imparts to the nut just "get its attention" and start electrons moving - which is essentially what's keeping a nut "stuck" to the thing it's threaded on to - molecular bonds involving electrons - PWM might just "excite" a coil in ways that a constant flow of electricity just won't do.
This phenomenon - if it in fact exists - is at the heart of our debate about whether or not a Joyetech 3.4V battery (which I believe uses PWM) - might just produce more vapor on a given attachment than the constant 3.7 volts of an e-Power. Speaking of the e-Power, which I own and like, I hope you saw my recent post which gives it due credit. I have often said that the advantage of having a replaceable battery and a replaceable switch is an indisputable one. I think that the e-Power is "cool" enough that it arguably belongs in any given "arsenal" of vaping technology. Same with the Joyetech 18650 mod; as I sit here looking at mine - looking very much like a Mark 48 torpedo interbred with a killer whale, and with its very cool, rubbery, white, "clicky" button that slowly dims when you release it - I just admire it for its "coolness", and forgive it for being what is is, and not a VV device. Just like the e-Power, the eGo battery, the kGo, the Riva, the Smoktech Woo, the Volt, and a whole bunch of other devices that just have that "certain something" that makes me admire them and the people who designed them.
I just really love this whole field, and think that vaping is one of the coolest things ever. Insanely enjoyable, life-saving, a fun hobby, a great way to meet and interact with people, and just a blast in general. So many flavors and devices, and so little time to explore and enjoy them all. I guess it's a good thing whn your biggest problem with something is that death will separate you from it. Fortunately, were all extending our lives, and making them happier and healthier in the process.
And I am constantly amazed at the positive effects of the ingestion of a "therapeutic" amount of nicotine - which I have a feeling is around half of what I'm currently vaping - (around 6mg instead of the 12mg which I currently dare not change lest I start to feel like my "old", mopey self again). Nicotine without carbon monoxide and hundreds of toxins is a remarkable thing; I really do think that my memory and thought processes are better than they've ever been. As evidence of that, I offer the fact that you and I are agreeing more and more lately LOL.
I'll do some more digging on the PWM thing and post it when I can. Thanks for the great question Sailor, and for the tremendous contribution you make to this place.
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Another thought; I think I saw in a video once some guy taking about a kGo battery to reveal - a Joyetech battery "innards". If it's the case that kGo batteries were non-PWM at the time that video was made, and are now - it could be that Joytech supplied the battery "innards", but not the circuitry that makes an Ego battery put out PWN. If it's true that kGo batteries now do employ PWM, maybe they've since bought, wooed, or otherwise cajoled the technology from Joyetech. Not 100% sure of any of this, just a semi-educated hunch at this point. I do love science and the scientific method, so let's both put it to use to try to get to the bottom of this - whay say?
*Handshake*
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Final thought: it seems to me that a variable-voltage device once set to a particular output voltage might rightly be considered a constant voltage device a far as that setting s concerned, and then can just use PWM just like a constant-voltage device would with the output voltage determined by its regulated voltage level, or, in the case of an unregulated fixed-voltage device, by the battery voltage. If that's the case, that would IMO by why both a VV device and a CV (constant voltage) device could use PWM.
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AFK for a while - gotta go to Staples and give Bill Gates another $199.99. My Vista has become so unstable and virus-ridden that I can't even Google any more, and can barely post anything here. I also piced up a very new-to-me kind of virus - it plays audio files - mostly commercials - that Staples says have been implanted right into my OS. If hackers devoted all that time and energy to vaping technlogy, we could all vape telepathically and not even need juice. I can't stand those buggers .... grrr.