I'm using a 1.5 ohm dual coil carto running at 4 volts. When I'm figuring watts, should I be using the 1.5 or 3.0 since that's the combined rating?
Quick question re: ohms on dual coils
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The way I understood it there were two 1.5 ohm coils with a cumulative resistance of 3 ohms. That's not the case?
I'm good with it at 4 volts, I just wanted to make sure I was figuring wattage correctly. Thanks for the responses!
This is not how they are set up. Besides, two coils in series would function basically the same as a single coil with double the resistance. Here's a page that explains it a little: Undestanding resistances, LR and HV
Ok so if I'm running a 1.5 ohm dual coil at 4 volts, I'm vaping at 10.67 watts and pulling 2.67 amps?! Isn't that slightly crazy/dangerous? It would explain why I'm burning through an 18350 in about 3 1/2 hours though...
Yes, that's correct. There's a few more electrons bouncing around, but I don't think it's that dangerous. The current and power will be split between the two paths. It will burn through your batteries and juice, though.
Basically, you're vaping two 3.0 Ω cartomizers at the time; lots of vapor, but not more warmth. You're just draining your battery (and using up your juice) at double speed.
And yes, I did screw up on this post, they are wired in parallel, I'm very sorry for the typo.
Wait a minute. Stop back up. Somebody is confusing me. Dual coils actually uses less battery. Can somebody please explain this for me? I don't know how but this is what I have learned from some reliable source But I'm sooooo dumb I can't re explain it.
Yeesh... Well I've got some single coils on the way so we'll see how those work out. I'm pretty happy with the dual coils and they're working for me but if I can squeeze more battery life and go through less juice without sacrificing flavor and vapor that would be great.
If you are running VV, go single coils and don't look back! I really think the duals were a last ditch effort to beat the RBA's at their game and it was a loosing effort! There are too many choices out there in single coils, that are so much better, IMO, that the dual coils are a dying breed.
I think the idea was to get more run time from a 3.7v mod by using the higher ohm's and burn hotter. The problem is ohm's law never changes, it's a constant, you don't get something for nothing. It was a nice try, but I think it's run it's course.
I think the idea was to get more run time from a 3.7v mod by using the higher ohm's and burn hotter. The problem is ohm's law never changes, it's a constant, you don't get something for nothing. It was a nice try, but I think it's run it's course.
I much prefer single coils myself.
Ive heard it explained this way.
On a single coil carto with a variable voltage device you take the resistance and add two to get in optimum range for juices (this puts you at about 8 watts)
So for a 2ohm single coil you add 2 to get 4 volts....again this will get you pretty close. Just bump the voltage up or down from there to adjust to taste/
For a dual coil youre effectively doubling the resistance.
So you would take 2ohm dual coil and double it then add 2 for 6 volts.
Thats always how I've heard it explained, just like Sawlight.
Ive heard it explained this way.
On a single coil carto with a variable voltage device you take the resistance and add two to get in optimum range for juices (this puts you at about 8 watts)
So for a 2ohm single coil you add 2 to get 4 volts....again this will get you pretty close. Just bump the voltage up or down from there to adjust to taste/
For a dual coil youre effectively doubling the resistance.
So you would take 2ohm dual coil and double it then add 2 for 6 volts.
Thats always how I've heard it explained, just like Sawlight.
Faylool and Zapped; did you read the link that Kable posted, earlier? You may find it helpful.
Are you familiar with Ohm's law? There really isn't a "simple explanation" to how it works... DC have been discussed here before, in length, you can use the advanced search or just google it. If you don't feel like studying the subject, I like this explanation by John D in CT:
http://www.e-cigarette-forum.com/forum/new-members-forum/313846-carto-question-3.html#post6657930
Or just switch to single coils.
And remember, wattage (heat, power) = voltage (of your battery, in volts) squared divided by resistance (of your atomizer, in ohms).
Most people like it somewhere between 4-8.5 watts.
Happy vaping.
Are you familiar with Ohm's law? There really isn't a "simple explanation" to how it works... DC have been discussed here before, in length, you can use the advanced search or just google it. If you don't feel like studying the subject, I like this explanation by John D in CT:
http://www.e-cigarette-forum.com/forum/new-members-forum/313846-carto-question-3.html#post6657930
Or just switch to single coils.
And remember, wattage (heat, power) = voltage (of your battery, in volts) squared divided by resistance (of your atomizer, in ohms).
Most people like it somewhere between 4-8.5 watts.
Happy vaping.
Faylool and Zapped; did you read the link that Kable posted, earlier? You may find it helpful.
Are you familiar with Ohm's law? There really isn't a "simple explanation" to how it works... DC have been discussed here before, in length, you can use the advanced search or just google it. If you don't feel like studying the subject, I like this explanation by John D in CT:
http://www.e-cigarette-forum.com/forum/new-members-forum/313846-carto-question-3.html#post6657930
Or just switch to single coils.
And remember, wattage (heat, power) = voltage (of your battery, in volts) squared divided by resistance (of your atomizer, in ohms).
Most people like it somewhere between 4-8.5 watts.
Happy vaping.
No I didnt. I hate math with a passion. If it were explained in plain words then Id definitely be all for reading up on Ohms law and I think thats where the confusion lies. You understand it perfectly but someone whos more literary inclined like Faylool and I arent going to get mathematical formulas and equations .
As to what I posted, Thats what Ive heard repeated many times on these forums for going on 4 years now. Ive also vaped a 2ohm dual coil at 6 volts using the extremely basic math I mentioned. Maybe thats part of the reason why I prefer single coils but it didnt "pop" or have any burnt taste to indicate it was overheating like a single coil would if it was over-voltage.
Just out of curiosity what do you personally vape dual coils at on a VV device? That would go a long way to clearing up the misinformation without sounding like your chiding someone for being stupid.
I can assure you neither of us are, our brains are just wired differently.
If I sound frustrated its not directed at you at all. Ive been vaping on and off for a long time now and was even a vendor for a brief period but any conversation involving math vexes me to no end.
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