Ohm's for Dummies

[rockerlynne]

I've read a little bit about ohm's but nothing is really clicking with me. I have a Mini Viva Nova kit that includes these:
3 x Atomizer heads :
1 x 1.8 ohm Low resistance
1 x 2.4 ohm Regular resistance
1 x 2.8 ohm High Resistance "For higher voltage use."
I started out with the 2.4 ohm in the tank. I liked that. I have now tried both the 1.8 and the 2.8 and I can't say I really noticed the difference between those two, but still feeling like the 2.4 gave me the best overall hit for throat, vapor and flavor. I am using an Ego-T and an Ego-C twist. I'm looking for a combination that will give me a bit of a pull, NOT airy at all, and plenty of hit and flavor. Anyone with a SIMPLE way to help me understand all this?

 

[GraceH]

Ohms has to do with the amount of volts/watts you can vape with. The higher volts the warmer the vape, more vapor, and flavor. There are ohm/volt charts you can use but what I do is add 1.8 to the ohms and vape at that volts at first and then adjust to taste. Ohms/volts doesn't affect the airy draw. Different devices draw differently.
Hope this helps
Happy vaping

 

[Baditude]

I use the Safe Vaping Power Chart to assist me in picking the correct ohm (resistance) for my chosen battery device. The author wrote the following article to help people find their "sweet spot" in vaping gear and their juices. The chart is at the end of the article, just click on it for an enlarged image.

Guide to Safe Vaping - E-Cigarette Safety | Ecig Advanced Community Blog

 

[AttyPops]

Ohms are resistance...AKA friction or lack of conductivity. Like "how hard is it to push fuel through this fuel filter?" or "how hard is this cig to take a drag off of?"

So, higher ohms require higher pressure (volts) to work...or you won't get enough electricity flowing per second to heat the coil.

The minimum is zero... A SHORT! No resistance whatsoever...electrons flying full-goose-bozo! Pure chaos! That's why batteries go boom when shorted...they heat up too much when supplying excessive electrons.

The maximum is near infinity (a perfect insulator).

The more electrons you push through a resistance per second, the hotter it gets. That's why they have all those warnings on extension cords. Also why power lines sag in the summer during peak air conditioning use.

That's all electricity.

The air flow of a gadget is a different factor.

 

[rockerlynne]

Okay, it's starting to click! Love the chart, that definitely helps. Pictures make things easier for dummies to understand.

 

[marcelohayashi]

thanks~ much easier to understand. I've been looking for a chart like that for ages

 

[jj029]

I use the Safe Vaping Power Chart to assist me in picking the correct ohm (resistance) for my chosen battery device. The author wrote the following article to help people find their "sweet spot" in vaping gear and their juices. The chart is at the end of the article, just click on it for an enlarged image.

Guide to Safe Vaping - E-Cigarette Safety | Ecig Advanced Community Blog

Thanks for posting this! It's amazing what a difference a couple tenths can make.

 

[darkzero]

Thank you for this thread. I just ordered my first device/mod & what atomizer to order I wss unsure of.

 

[laylajone]

This chart helps me to understand the difference between the LR atomizers and standard, etc...even though I've been vaping for over a year, it has only been in the last month or so that I've switched to the Riva type batteries and using the atomizers. This info helps tremendously, since using a different mod gives different options--but more complicated! Thanks for the "how to" for dummies!

 

[tj99959]

The end result of all that electrical stuff is the power used (measured in watts). The power used is subjective, and will be different for each person. So it's important that you learn what power level you as an individual like to vape at. Once you know the power level that you like, it becomes easy to figure out what resistance will work best at any given voltage.

As an example, lets say I want to vape at 7 watts, and the eGo twist is set at 4 volts. If I plug those two figures into this Ohm's Law Calculator it will tell me what resistance to use. (2.3 ohms)

 

[akim80]

I use the Safe Vaping Power Chart to assist me in picking the correct ohm (resistance) for my chosen battery device. The author wrote the following article to help people find their "sweet spot" in vaping gear and their juices. The chart is at the end of the article, just click on it for an enlarged image.

Guide to Safe Vaping - E-Cigarette Safety | Ecig Advanced Community Blog

I think this is a great thread!

 

[LoriP1702]

So if it's a dual coil, 2.5 ohm, does that make it 5 ohm total?

 

[Baditude]

So if it's a dual coil, 2.5 ohm, does that make it 5 ohm total?

No, a 2.5 ohm dual coil has two 5 ohm coils. (I know, to the un-electrical minded it sounds backwards) Your multimeter will read both coils combined as 2.5 ohms.

 

[darkzero]

So if it's a dual coil, 2.5 ohm, does that make it 5 ohm total?

As Baditude stated two 5Ω coils will give a total of 2.5Ω if wired in parallel but if the two 2.5 ohm coils were wired in series (which would not make much sense in an atty & much harder to install) it would give a total of 5Ω


Resistor in parallel:
Rtotal = 1/(1/R1 + 1/R2 + 1/R3 ... + 1/Rn)

Resistor in series:
Rtotal = R1 + R2 + R3 ... + Rn

 

[LoriP1702]

No, a 2.5 ohm dual coil has two 5 ohm coils. (I know, to the un-electrical minded it sounds backwards) Your multimeter will read both coils combined as 2.5 ohms.

Ok, thank you!

As Baditude stated two 5Ω coils will give a total of 2.5Ω if wired in parallel but if the two 2.5 ohm coils were wired in series (which would not make much sense in an atty & much harder to install) it would give a total of 5Ω


Resistor in parallel:
Rtotal = 1/(1/R1 + 1/R2 + 1/R3 ... + 1/Rn)

Resistor in series:
Rtotal = R1 + R2 + R3 ... + Rn

Thank you!! I have a lot more reading to do.