Thinking higher ohms are my friend

[Tomjames]

The relationship of resistance & wattage is a bit difficult to understand and very hard to explain in terms of words. A posted formula doesn't help those that have no understanding of electronics.

So, try this:

A 1.8 ohm single coil head will produce the same amount of heat at 8.5 watts as a 2.5 ohm single coil head will at 6 watts.

So, if your 2.5 ohm single coil head is actually running at 2.8 ohms then the coil would require 5.5 watts for same amount of heat.

If your PV won't go below 6 watts then the vape may burn.

How the juice reacts to a set amount of heat is dependant on many variables. Two variables include: ambient air temperature & humidity (known as dewpoint.) One more variable is the juice itself.

The bottom line is: If you're tasting burnt vape at minimum wattage, switch to VV. If you prefer VW, try lower resistance coils.

No!! This isn't right. In fact it's heart breakingly wrong.

If you've tried everything and it's still burnt, you need a higher resistance coil! Not lower! And heat can be pretty much measured in watts.

It's pretty basic maths....

When you connect a coil (or a bulb or a motor or an iPhone) to a battery, a current (measured in Amps) flows through the coil. How much current flows depends on the resistance (measured in ohms) of the coil.

Current = voltage / resistance. Easy! The lower the resistance, the higher the current. The higher the voltage the higher the current. Obviously, the higher the resistance the lower the current, and the lower the voltage the lower the current.

You must understand this first.

Now, assuming the voltage is fixed. On say a normal ego battery, 3.7volts, but it will tail off as you use it. (If you remember cassette tapes and Walkmans, the song would slow down as the batteries drained). But assuming the voltage is fixed, a lower resistance coil gives us more current, and a higher resistance gives us less current.....still easy so far right?

The thing we are actually bothered with is HEAT. Which is the useable energy that we vape with. Energy is measured in watts. You calculate the wattage by the following...

Watts = voltage multiplied by current.

Or, using a bit of maths.....

Watts = voltage squared / resistance.

It doesn't matter what resistance the coil is, if you set your vamo or provari or whatever to 6 watts, you get the same amount of heat. The VW device will cleverly adjust the voltage to keep the watts the same. (Although I concede there may be some slight differences with heat-up times of wires at different thicknesses)

In a nutshell.

1) normal ego batteries are fixed at 3.7 volts, but this drifts down in time. The amount of power now depends purely on the resistance of the coil.

2) variable voltage (twists) allow you to tweak the voltage, meaning the amount of power depends on the coil and where you set the voltage.

3) variable wattage means you set the power, and the device sets the volts depending what coil you've connected to it.

The sweet spot that we all look for is WATTS. Certain juices vaped over certain coils taste best on certain taste buds at a level of watts......if you lower the coil resistance, you must lower the voltage to keep the same wattage.

Volts, current, resistance and watts are all present in every vape we take....you cannot prefer or choose one or another.

2)


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[Recycled Roadkill]

Alrighty then, back to the drawing board!

 

[Venture]

I use the Kanger Evod which came with a 2.5 ohm coil.

The vendor I chose sent me some clone coils at 1.8 ohms.

The difference was immediately noticeable.

I now use only Kanger 2.5 ohm coils which give me the vape I like.

 

[roadie]

A 1.8 ohm coil is going to contain less or thinner wire (or both) and thusly is going to heat up faster than a 2.4 ohm coil at the same wattage, but at the same voltage it would be less watts. IF THAT IS WHAT YOU LIKE then that's what you like. No need for there to be an argument about it, but generally people start out with a cooler vape and work their towards a hotter vape. I know I did. But not everybody's the same.

Actually it would be thicker wire. Just didn't want to mislead anyone.