[h=2]
Ohm's Law explained in layman terms.[/h]
I see so many people asking about all the various properties of atomizer resistance and voltages and how this affects what is going on. I thought I would do a short (long) writeup for the people that do not understand how this works.
Conductors and how they pass current flow-
Conductors are anything that conducts electricity, or lets current flow. What ever the material is, its has a specific number of protons, and neutrons that make up the core with tiny electrons running around the outside. If there is a path from the battery to the ground (positive and negative side of a battery) current will flow. Current flows with the movement of the electrons on the atom. When you add an electron to an atom, it cannot hold more than it already has or it becomes another substance. So when it accepts the electron it passes one off the adjacent atom. This happens all the way down the wire until the last atom at the negative end of the conductor pushes one out. This is just like a pipe full of water. If you put in a drop on one end a drop comes out the other. If you put in 5 gallons, you get 5 out.
Resistance and how it affects current flow-
All materials have some type of resistance. Conductors have very very little resistance. Copper has almost none being a very good conductor. If you used a copper coil in your PV it would read it as a dead short (+ and - touching) and would let and extreme amount of current to pass and damage electronics not designed for such thing. The wire that makes up our coils has resistance to current flow. Resistance is how hard it is for electrons to pass from one atom to another. The higher the resistance of a material, the more voltage it takes to move the same number of electrons to make current flow. Again lets look at a water pipe. If you have a pipe that is 6 inches in diameter, it doesn't take much pressure to pump 100 gallons a minute. If you have a pipe that is only 1/4 inch in diameter, you would have to have a much greater pressure to pump the same amount of water. The higher the resistance of a material, the smaller the pipe.
Voltage-
Voltage is just like water pressure. The higher the voltage, the more current will flow across the circuit. It doesn't get much simpler that that.
What your atomizer does and how current flow affects it-
Your atomizer has resistance to current flow. Its hard for voltage to push the electrons through it. What happens is the friction of the electrons (just like rubbing your hands together) causes heat. As electrons jump from atom to atom, each atom is resistant to receive a new one and just as resistant to give one up. This causes your coil to heat up and atomize your juice. The less resistance, the more current will flow to heat it up. Fortunately, that all happens automatically. With the same voltage, (or water pressure), more flow will occur with less resistance (or with a larger pipe). So when you put in a higher ohm coil, it automatically cuts down the current flow and therefor the heat. This is why using a low ohm atomizer on an Ego works so well. You automatically get more current flow on the same voltage battery. When you get into VV or VW devices, it makes no difference. You simply add voltage pressure to get the current flow up to heat the coil to the desired point.
Now the Math-
* = multiplied by
/ = divided by
Everything we have talked about is really all about power. Power is just the complete output taking all things into consideration. Power (P) is rated in Watts.
Power = Volts * Amps
Power = Amps (squared) * Ohms
Power = Volts (squared) / Ohms
Voltage is rated in Volts (V)
Volts = Watts / Amps
Volts = Amps * Ohms
Volts = (square root) of Watts X Ohms
Current flow (I) is measures in Amps
Amps = Volts / Ohms
Amps = Watts / Volts
Amps = (square root) of Watts / Ohms
These are the formulas for calculating resistance, but its really not needed in this hobby because once we build an atomizer its stays relatively the same until problems start to occur.
Resistance (R) is measured in Ohms
Ohms = Volts / Amps
Ohms = Watts / Amps (squared)
Ohms = Volts (squared) / Watts
Overveiw-
Voltage is just like water pressure. More pressure = more water (current) flow.
Resistance is how big the pipe is. Smaller pipe takes more pressure to get more current flow.
Current is the amount of water flowing. Current is just a measurement of how much is flowing. The only way to raise this is to raise voltage or lower resistance. You cant change current alone without changing the other two.
I hope this is not an over explanation and someone that didn't understand this can now get a better idea.
Thanks for reading
Grimm
Conductors and how they pass current flow-
Conductors are anything that conducts electricity, or lets current flow. What ever the material is, its has a specific number of protons, and neutrons that make up the core with tiny electrons running around the outside. If there is a path from the battery to the ground (positive and negative side of a battery) current will flow. Current flows with the movement of the electrons on the atom. When you add an electron to an atom, it cannot hold more than it already has or it becomes another substance. So when it accepts the electron it passes one off the adjacent atom. This happens all the way down the wire until the last atom at the negative end of the conductor pushes one out. This is just like a pipe full of water. If you put in a drop on one end a drop comes out the other. If you put in 5 gallons, you get 5 out.
Resistance and how it affects current flow-
All materials have some type of resistance. Conductors have very very little resistance. Copper has almost none being a very good conductor. If you used a copper coil in your PV it would read it as a dead short (+ and - touching) and would let and extreme amount of current to pass and damage electronics not designed for such thing. The wire that makes up our coils has resistance to current flow. Resistance is how hard it is for electrons to pass from one atom to another. The higher the resistance of a material, the more voltage it takes to move the same number of electrons to make current flow. Again lets look at a water pipe. If you have a pipe that is 6 inches in diameter, it doesn't take much pressure to pump 100 gallons a minute. If you have a pipe that is only 1/4 inch in diameter, you would have to have a much greater pressure to pump the same amount of water. The higher the resistance of a material, the smaller the pipe.
Voltage-
Voltage is just like water pressure. The higher the voltage, the more current will flow across the circuit. It doesn't get much simpler that that.
What your atomizer does and how current flow affects it-
Your atomizer has resistance to current flow. Its hard for voltage to push the electrons through it. What happens is the friction of the electrons (just like rubbing your hands together) causes heat. As electrons jump from atom to atom, each atom is resistant to receive a new one and just as resistant to give one up. This causes your coil to heat up and atomize your juice. The less resistance, the more current will flow to heat it up. Fortunately, that all happens automatically. With the same voltage, (or water pressure), more flow will occur with less resistance (or with a larger pipe). So when you put in a higher ohm coil, it automatically cuts down the current flow and therefor the heat. This is why using a low ohm atomizer on an Ego works so well. You automatically get more current flow on the same voltage battery. When you get into VV or VW devices, it makes no difference. You simply add voltage pressure to get the current flow up to heat the coil to the desired point.
Now the Math-
* = multiplied by
/ = divided by
Everything we have talked about is really all about power. Power is just the complete output taking all things into consideration. Power (P) is rated in Watts.
Power = Volts * Amps
Power = Amps (squared) * Ohms
Power = Volts (squared) / Ohms
Voltage is rated in Volts (V)
Volts = Watts / Amps
Volts = Amps * Ohms
Volts = (square root) of Watts X Ohms
Current flow (I) is measures in Amps
Amps = Volts / Ohms
Amps = Watts / Volts
Amps = (square root) of Watts / Ohms
These are the formulas for calculating resistance, but its really not needed in this hobby because once we build an atomizer its stays relatively the same until problems start to occur.
Resistance (R) is measured in Ohms
Ohms = Volts / Amps
Ohms = Watts / Amps (squared)
Ohms = Volts (squared) / Watts
Overveiw-
Voltage is just like water pressure. More pressure = more water (current) flow.
Resistance is how big the pipe is. Smaller pipe takes more pressure to get more current flow.
Current is the amount of water flowing. Current is just a measurement of how much is flowing. The only way to raise this is to raise voltage or lower resistance. You cant change current alone without changing the other two.
I hope this is not an over explanation and someone that didn't understand this can now get a better idea.
Thanks for reading
Grimm
