Vamo VV VW and automatic calculations

[Argusi]

So, something is confusing me. I keep seeing VW will automatically calculate voltage (E/V) based on resistance (R) and what wattage (P) you set it at. This has been said to be easier/better(?) although not as accurate as VV due to the .5 increments. This makes sense to me.

But, if you are in VV mode, what does the Vamo do with wattage? Is it not calculated? Is it constant? Does it pull a number out of a hat???

I realize current (I) is the missing factor here, so does that come into play? In VV mode, does it set the wattage to whatever current it has available? If the current was constant, then the wattage would automatically be set in VV mode. If the current varied, then the wattage would vary, also.

I hope this makes sense.

E=IR, P=IE, I=P/E, etc...

 

[memories]

Wattage = voltage x2 divided by resistance. Example- you have a 2ohm carto, and you set your vamo for 4 volts. Your pushing 8 watts. That's 4x4 (16) divided by 2, and you get 8.

So by playing with vv, YOUR changing the watts (not the vamo).

If your in vw mode, the vamo will push out the 8w no matter if you change the resistance. The vamo will adjust the voltage to push out the configured wattage.

Hope this helps.

 

[nahoku]

although not as accurate as VV due to the .5 increments.

This is a misconception many people have. People are being fooled because the VW increment is stated at .5 and the VV increment is stated at .1.

Just because the stated increment is larger for VW doesn't mean VV is more accurate. They actually both adjust the output to about the same value... in terms of power.

A change of .5 in VW mode will change the output voltage by about .1 volts (yes, this is the VV mode increment)

A change of .1 in VV mode will change the output power by about .5 watts (yes, this is the VW mode increment)

Do some calculations HERE to verify for yourself.

 

[Argusi]

Ah, you are right about the increments. I didn't even think about the correlation. Thanks nahoku!

So, there is no real advantage either way? Is this just marketing or perception? I will just use VV as that's what is common and I won't sweat my next PV purchase "having" to have VW because it's "better" if that's the case...

Thanks!

 

[Innocuous]

Same advantage as usual: When you expect W watts, and change your atty from R0 to R1, you still have W watts and the volts were adjusted to achieve it. VW is a convenience. VV is a necessity. Frankly, I am very comfortable with VW, now.

 

[nahoku]

Ah, you are right about the increments. I didn't even think about the correlation. Thanks nahoku!

So, there is no real advantage either way? Is this just marketing or perception? I will just use VV as that's what is common and I won't sweat my next PV purchase "having" to have VW because it's "better" if that's the case...

Thanks!

Those are tough questions. I wouldn't simply discount VW as it does afford you the advantage of getting close. I vape on drippers that are set up to 1.6 - 1.8 ohms. Using VW brings me in the range for whichever dripper I attach to the Vamo. If I used VV mode, then I would have to adjust the voltage each time I changed devices. VW works very well in cases like this, but most still end up adjusting here and there to achieve their optimum vape. A lot of my adjustments depend on what juice I happen to be vaping at the time.

VW can fall down when dual coils are introduced however. Although you can run dual coils, the vape may seem cooler and that's just because of how the Vamo adjusts to the dual coil device. You can read more about it HERE if you wish. Note that this writeup is only a technical view of how VW handles single versus dual coils. In real life, a lot of people can't really tell, or don't realize the electronics has influenced their vape. Perceptions can be deceiving, but you can't argue the science.

 

[Argusi]

I think I get it now. The reason I don't perceive an difference is because I use the same resistance attys. I change settings according to what juice I'm using, not the atty...

Thanks for the link also nahoku, as I've been thinking about experimenting a lot more and am even looking into dual coils and genesis styles. Yeah, completely different, but ya gotta love gadgets and I have a lot to learn!

 

[nahoku]

Yah, both VV and VW are useful in they're own right. I wouldn't discount either, and it wouldn't surprise me to see more PV's include VW mode. Enjoy yourself with any new gadgets you obtain... I love 'em too!

 

[Argusi]

I'm already shopping to increase my collection PV's and maybe a Genesis... Hmmm. May have to find out how good it is!