Itaste vv questions? Dual coil tank. VV vs VW mode

[StephenMulkey]

So I am running a dual coil Kanger T3'D tank on a itaste vv V3.0. I have heard dual coils run better on higher watts is this true? Also in vw mode it only goes up to 11 watts, but in vv mode it goes up to 5.0 volts. So if my math is right at just 4.5 volts that's 13.5 watts. So can I actually run higher watts in vv mode than in vw mode or am I missing something?

 

[Archon]

This is something I've wondered about as well. I don't know about dual coils running better on higher wattages, I think that only really matters if you're running low resistance or sub-ohm coils.

Because to have 4.5 volts and 13.5 watts you'd have 1.5 ohms or resistance (wattage=voltage squared/resistance). But in dual coil that would mean two 3 ohm coils in parallel, so if you were running 4.5v through a 1.5 ohm dual coil you wouldn't actually be doing 13.5w, but 6.75w to two coils. I think. I'm still trying to get a handle on the details of how exactly this stuff works as well. I think the amp limit comes into play here too.

 

[k702]

I believe I remember PBusardo saying that it didn't exceed the 11 watts advertised when used at a higher voltage with a lower ohm coil attached. There's some sort of safety feature that stops it from doing so.

the technical stuff starts around 25:00 He explains it much better than I
https://www.youtube.com/watch?v=2XRTr8D4MlM

 

[edyle]

So I am running a dual coil Kanger T3'D tank on a itaste vv V3.0. I have heard dual coils run better on higher watts is this true? Also in vw mode it only goes up to 11 watts, but in vv mode it goes up to 5.0 volts. So if my math is right at just 4.5 volts that's 13.5 watts. So can I actually run higher watts in vv mode than in vw mode or am I missing something?

Those typical commercial coils run at about 5 watts per coil; so a dual coil head tends to run at 10 watts.

Yes you might get more power on the voltage setting depending on the coil, and you might get lower voltage available on the wattage setting; it depends on the current limit of the device.

In practice your voltages losses are going to be more significant on such a small device; the current limit on a small device is also tighter.

 

[StephenMulkey]

Those typical commercial coils run at about 5 watts per coil; so a dual coil head tends to run at 10 watts.

Yes you might get more power on the voltage setting depending on the coil, and you might get lower voltage available on the wattage setting; it depends on the current limit of the device.

In practice your voltages losses are going to be more significant on such a small device; the current limit on a small device is also tighter.

I know the Itaste has a maximum current of 3.5 ampere Someone explain voltage losses to me I don't really understand?

 

[StephenMulkey]

I'm just trying to understand the technical side of this. I know in actual practice I am getting more vapor and flavor at 4.5 volts in vv mode than I am at 11 in vw.

 

[StephenMulkey]

I believe I remember PBusardo saying that it didn't exceed the 11 watts advertised when used at a higher voltage with a lower ohm coil attached. There's some sort of safety feature that stops it from doing so.

the technical stuff starts around 25:00 He explains it much better than I
https://www.youtube.com/watch?v=2XRTr8D4MlM

LoL I had watched the video up to like 23 minutes I went and watched the rest. It looks like according to phils test it can't fire a 1.5 ohm coil above 3.6-3.7 volts which means at least in vv mode I am getting around 8-9 watts which I guess is being split between the two coils, but I am even more confused now because in practice it produces more vapor and has better flavor at 4.5 volts. The itaste seems to do better with coils closer to 2.0 ohms. I have noticed under load the resistance of my tank comes up as 1.6 I wonder if that makes any difference.

 

[edyle]

I know the Itaste has a maximum current of 3.5 ampere Someone explain voltage losses to me I don't really understand?

If you have a 2 ohm coil, and your power source / electrical contacts / internal resistance etc have an additional 0.2 ohms (10%) then 10% of your voltage is lost/wasted. Usually it's called 'voltage drop'.

 

[edyle]

I'm just trying to understand the technical side of this. I know in actual practice I am getting more vapor and flavor at 4.5 volts in vv mode than I am at 11 in vw.

power = volts x volts / ohms.

Note: sometimes there's a mixup when you have a power source using pulsed output and you need to take into account whether the volts on the screen is RMS volts or MEAN volts. Not sure if that applies to the vv v3.

 

[vapoooor]

voltage will stay the same when your resistance (ohms) changes, when your in wattage mod and your resistance (ohms) changes it automatically changes your volts. I used to only vape in volts until I understood watts.

FYI if you have a coil manufactured from a company most the time they will fluctuate .1 to .2 ohms here and there.

 

[shawnphase]

stick around 6.5-8...the vapor production is better and the vapor itself isnt as hot. your juices will be more muted any higher than that and it'll thrash your coils if youre using high vg.