Clarification on VV and VW

[k75srider]

I have probley read about this on the MVP thread, but I need clarification. My understanding is that with the MVP you adjust the voltage or the watts. Voltage produces x amount of watts, watts will call for x amount of volts. Also does the Vamo-5 function in the same way. I'm tired of going around and round with the local BM vape shop about this. Thanks to anyone that replies.

 

[p.opus]

Variable wattage and voltage are two distinct modes. They are not dependent on each other.

A device capable of variable wattage and variable wattage is only capable at one mode at a time. it is either in variable wattage mode. or variable voltage mode.

to understand each you need to know how watts, voltage and resistance relate. This is called Ohms Law....

Watts = Voltage * Voltage / Resistance.

So on a VV and VW device, whether or not you are adjusting volts or watts, you are still adjusting the watts seen at the atty head.

In a variable voltage device, I set the device to a desired voltage and it will fire that voltage irregardless of what the resistance of my atomizer is. So if I set the device to 4.0 volts and put a 1.5 ohm coil on it, it will produce 10.67 watts, If I put a 2 ohm coil, it will produce 8 watts. If I put a 2.5 ohm coil or head on it, it will produce 6.4 watts. In variable voltage mode, the mod always puts out 4 volts (or whatever I set it to..)

In Variable wattage mode. The device reads the resistance of the coil and automatically adjusts voltage so that it maintains the given watts. So lets say we set the device to 8 watts. If I put a 1.5 ohm coil on the device will adjust voltage down to 3.4 volts to maintain 8 watts. If I put a 2 ohm coil on it, It will raise voltage to 4.0 volts to maintain 8 watts and if I put a 2.5 ohm coil on the device it will raise voltage to 4.5 volts to maintain 8 watts.

Some equate variable wattage to cruise control, which isn't entirely inaccurate.

If you use the same toppers and same juice, VW devices can reduce the amount of adjusting you do on the device. But different juices taste different at different wattages, and different toppers perform differently. For example 8 watts on a Mini ProTank 2 will likely burn the juice where as 8 watts on a Kayfun may barely get it going.

Irregardless of what method you use, they both are ways to adjust the device so that you can get the flavor profile you desire for a given juice and topper combination, without needing to recoil the atomizer.

 

[edyle]

I have probley read about this on the MVP thread, but I need clarification. My understanding is that with the MVP you adjust the voltage or the watts. Voltage produces x amount of watts, watts will call for x amount of volts. Also does the Vamo-5 function in the same way. I'm tired of going around and round with the local BM vape shop about this. Thanks to anyone that replies.

With VV you set the voltage;
IF you change the coil and the new coil has a different ohms, the temperature of the coil will be different.

With VW you set the wattage;
If you change the coil and the new coil has a different ohms, the circuit adjusts so you continue at the same temperature.

The MVP2, the vamos, the zmaxes, the sid, evic etc.. most of them have VV and VW available.

Exceptions:
- the provari is vv only
- itaste 134 is vw only


===edit===
on second thought maybe all this below is too much information
=========

Also, it's relevant to note:
The MVP2 and the Provari put out a flat dc voltage.

The vamos and the zmaxes put out a pulsed voltage: in the case of the vamo (and i presume the zmaxes) it puts out a 6 volt pulse; when you want higher power/voltage, it puts out the 6 volts in longer pulses.
If you set it for 6 volts you'll get a flat 6 volts dc;
if you set it for 3 volts mean mode you'll get 6 volts half the time and 0 volts half the time pulsed
if you set it for 3 volts RMS mode you'll get 6 volts 1/4 of the time and 0 volts the other 3/4 of the time
Mods that have a mean/RMS setting are using a pulsed output; a mod that outputs flat dc voltage only, does not need a mean/RMS mode option.

 

[kiwivap]

I have probley read about this on the MVP thread, but I need clarification. My understanding is that with the MVP you adjust the voltage or the watts. Voltage produces x amount of watts, watts will call for x amount of volts. Also does the Vamo-5 function in the same way. I'm tired of going around and round with the local BM vape shop about this. Thanks to anyone that replies.

Hiya - yes with the MVP you can adjust watts or volts. And yes, Vamo functions in the same way. I have a couple of Vamos myself.
In simple terms - you choose one or the other - watts or volts. You don't need to choose both at the same time, and can't. If you set it at certain wattage, it reads the ohms of your attachment and then sets itself to the right voltage for the power (watts) you set.
If you set the voltage then it doesn't adjust - so you can either calculate the watts you want or go by taste.
Either way don't start with a high setting - start low and work your way up.
There's a link in my sig below with a bit more explanation. And I do think variable wattage as being like cruise control - I find easier and have used it for a long time. Cruise control being an analogy of course.

 

[k75srider]

Thanks to you all, guess that's why I like cruise control. The info made sense to me after reading it a couple of times. Silly me forgot about the resistance of the coil. Now I can explain this to a couple of people. ECF is awesome. Thinking of becoming a supporting member. I have learned so much from you all. Thanks again!

 

[DirtyJon]

Thank you everyone for this thread have learned a lot about my MVP silly me thought you could adjust both and didn't no it was one or the other feeling dumb but still learning so just shaking off the stupid pill and leaving brain waves open for learning