Are you building your mech mod and need help calculating the resistance? Do not move ! In this article we will give you all the information you need on the resistance of mechanical mods, Ohm’s law and the calculation that must be done for your resistance.
What is resistance?
As we explained to you in the article “What is a meca mod? “ , the only adjustment – but very important – on a meca mod, is the value of the resistance that you will mount on your atomizer. So before starting, a little reminder of what a resistance is.
It is a conductor that slows the passage of electrons in an electrical circuit. It is measured in ohms often represented by the letter Omega Ω. The greater the value of the resistance in a circuit, the more the current decreases. If, on the contrary, the value of the resistance is reduced, the flow of current is greater and therefore releases more power.
Everything you need to know about Ohm’s Law
Before you start using a mechanical mod, it is essential to have a good knowledge of Ohm’s law, in order to calculate the resistance to use.
What is Ohm’s law?
Ohm’s law is a physical law that describes the relationship between the intensity of a current, the voltage and the resistance. Its formula is as follows:
U = R*I
- U is the voltage expressed in Volts. It measures the electrical potential difference between each end of a circuit.
- I is the intensity expressed in Amperes. It measures the quantity of electrons in a circuit.
- R is the Resistance expressed in Ohms. It measures the ability of a material to impede the passage of current.
Thereby :
I= U/R
And above all: R = U/I
Calculating Resistance Using Ohm’s Law
You may not want to see mathematical formulas but when you want the best of the Vape, it is necessary!
To calculate all this, you will need two data: the maximum voltage of the battery (usually 4.2 volts) and the continuous discharge amperage of your battery.
What better than an example to understand? Here is one to understand the calculation made in order to know the minimum resistance accepted by the battery.
Take the case of a battery that has a voltage of 4.2 Volts and a continuous discharge current of 15 Amps.
4.2 / 15 = 0.28 ohms.
This battery can therefore be used with a resistance value of at least 0.28 ohm.
Know that there are tools to easily calculate the resistance value.
Mecavap mechanical mods should never be used with a resistance lower than 0.2 ohm.
Table of ohm’s law according to the models: meca box and meca tube mod
In order to help you, here is a table summarizing the good uses of ohm’s law according to the models – In red the zone of use at risk, in green the beginning of the safe zone.
|
Mechanical box – Double batteries in parallel |
Mechanical mod – Simple Accu |
Mechanical box – Double batteries in series |
|
4.2 Volts |
4.2 Volts |
8.4 Volts |
|
1 ohm = 2.1 A |
1 ohm = 4.2 A |
1 ohm = 8.4 A |
|
0.8 ohm = 2.62 A |
0.8 ohm = 5.25 A |
0.8 ohm = 10.5 A |
|
0.6 ohm = 3.5 A |
0.6 ohm = 7 A |
0.6 ohm = 14 A |
|
0.4 ohm = 5.25 A |
0.4 ohm = 10.5 A |
0.4 ohm = 21 A |
|
0.3 ohm = 7 A |
0.3 ohm = 14 A |
0.3 ohm = 28 A |
|
0.2 ohm = 10.5 A |
0.2 ohm = 21 A |
0.2 ohm = 42 A |
|
0.1 ohm = 21 A |
0.1 ohm = 42 A |
0.1 ohm = 84 A |
|
0.08 ohm = 26.25 A |
0.08 ohm = 52.25 A |
0.08 ohm = 105 A |
To conclude
It is therefore essential to calculate its resistance correctly in order to avoid any risk that could prove to be dangerous. Do not hesitate to be accompanied if you have any doubts about the calculation or to check it using online tools.
Once the right resistance has been found, the vaping experience that mecha mods have in store for you will make you forget about this math!
Mecavap offers mech mods made in France, in La Rochelle, with high-end materials with the sole objective: to offer you a unique vaping experience.