Put the full specifications for your coils on the packaging, or on an insert where they are included with another product (Kit or Tank.) For example "1.8Ω 3.3V-5.0V" or "0.3Ω 55W - 65W." Lettering should be at least 10pt so us aging folk with diminishing eyesight can read them.
It is very difficult for some of us to read the values stamped on the coils, even with a magnifying glass.
E = volts, I = amps, R= ohms, P = watts
for Nautilus R = 1.8Ω
P = 3.7V*3.7V/1.8Ω = 7.6W
P = 3.8V*3.8V/1.8Ω = 8.0W note 0.1V difference = 0.4W
P = 4.7V*4.7V/1.8Ω = 12.3W
P = 4.8V*4.8V/1.8Ω = 12.8W note 0.1V difference = 0.5W
Most digital VV MODs step voltage by 0.1V which roughly equates to 0.5W. VW digital MODs have a wattage step of 0.1W below 30W. This gives you finer control than the VV MOD. I run all my MODs in VW mode, regardless of the coil's resistance.
This was already the fact with the 3 different Atlantis coils and now with the new Triton probably too.
Anyway, in the practice, the main regulation is your personal feeling. If you want to vape on a coil at 13 W when all others around do it at 10 W, keep following your feelings.
;)
I thought I'd seen how, but apparently I haven't! I clicked the little upwards pointing triangle to upvote it - but how to I actually "like" a post?
Best Wish
The new packages have the 3 different choices on their left side (and I can read them with my glasses only ;) )
It could be older stock I guess - but that's great news if this information has been added to the packaging now :)
Nautilus coils never had it, at least a few months back (just the ohms, very small written, at the back of the pack)
ET-s and CE5 coil packages BVC or BDC do have it.
Would be great to see that kind of info on the pack for the nautilus too though - in wattage or volts :)
@midnightwolf thanks for the info - could you explain why voltage is better than wattage in rating for some coils?
no problem at all with the technical detail... what you're saying makes sense
but I have another query if you don't mind....
I was playing with the formula
voltage = amps x watts
and then found http://www.steam-engine.org/ohm.asp which made it a whole lot easier...
so basically because of the way low resistance affects that formula you effectively have large changes in watts for small changes in volts - so varying watts give better "fine tuning" ?
I ran a test and saw the difference with a 0.5 ohm coil at 30 watts - it more than triples the amperage while the volts are actually lower than on the higher ohm core.
Thanks very much for the pointer - its funny how playing with a calculator like that can help to lock in a concept - I appreciate your help :)
so VV would definitely give me more control on my MVP 3 pro for that kind of resistance; that can do Voltage in 0.1 steps, and Wattage in 0.5 steps - so the change over for precision for that mod is around 4.6 or 4.7 V (depending on rounding error) and then stepping the wattage would more precise. My only other mod is the Aspire CF Mod - I like it but there's no VV or VW to worry about
Thanks again for your input - this all makes a lot more sense thanks to two very informative posts :)
Aspire rates this coil for 10 - 13 watts. Using a VW MOD with 0.1W steps, you have 31 possible settings for this range. We need to calculate the minimum and maximum voltages for use with a VV MOD:
P = E * E / R
E = sqrt(P * R)
at 10 watts:
E = sqrt(10 * 1.8)
E = 4.24 volts
at 13 watts:
E = sqrt(13 * 1.8)
E = 4.84 volts
So our voltage range for the Triton coil is roughly 4.2 - 4.8. Using a VV MOD with 0.1V steps, there are 7 possible settings within its range.
It's the number of settings within the coil's range that determine how precise you can be. Using VV with 0.1V steps there are only 7 steps in the range, using VW with 0.1W steps you have 31 choices.
Note, I said my current coil and my Kamry 30 V2. There is a tolerance in manufacturing for both the coils and MODs. A different coil in the same tank using the same MOD may need a slightly different power setting to get the identical results. If I move my tank, with my current coil to another MOD, even the same model, I will probably have to adjust the power slightly to get the identical results.
The advantage of that precision is you can adjust your coil a little closer to your ideal. Some folks don't need it. Some folks need it to bring out the subtle hints of flavor in their liquids.
Great explanations from @midnightwolf and @Old_Salt
That is certainly why Aspire only made 1 W increments on its ESP 30W box.
Even with my Nautilus on the ESP or my older itaste 134, I use round figures and concentrate only on my vaping itself ;)
I just liked your post.I click the "like",then there is a number come out,the number means how many "like" your post received.
Hope he can figure out the problem.
:)]
I'm using IE11 and the attached image shows what I see with your last post...
I have passed this problem to our administrator,he is trying his best to figure this problem out now.
:)]
If any new information,I will let you know.