If a coil on, lets say a Vivi Nova, is dirty, will the ohms be higher? Just tested one and it claims to be a 2.4, but on my meter it says 3.2. I've been using this head for about 2 weeks and I'm just wondering if that is a good way to tell if its getting time to clean or replace the head. Just got the meter in the mail today so I have no idea what it was when I started using it.
Dirty coil and Ohm relationship?
- Thread starter xanthan
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Resistance can go up some with use. More likely what's happened is more of a QC thing. I've never had a 2.4 ohm Vivi Nova head that was actually 2.4. They've always ranged from around 2.6 to 3.4.
Not a bad habit to clean every other fill or so depending on your juice (darkness, sweetness, etc.).
Not a bad habit to clean every other fill or so depending on your juice (darkness, sweetness, etc.).
Seems like I remember from long ago some close-up pics of a coil before and after use. The coil was pitted. Pitting would make the resistance go up. So as a general rule... resistance increases as a coil is used. Dirty or clean. So not a good measurement of gunk-ness.
Performance (e.g. does it work well vaporizing the e-juice) is the best factor. Cleaner the better. Also... more frequent cleaning = easier cleaning IMO.
Some have reported decrease in resitance with use... but that is more like a short.
Performance (e.g. does it work well vaporizing the e-juice) is the best factor. Cleaner the better. Also... more frequent cleaning = easier cleaning IMO.
Some have reported decrease in resitance with use... but that is more like a short.
Think "highway" for electrons. The wider the path, the more electrons flow. Thinner wire = more resistance. Also more length = more resistance. Resistance is like total friction/traffic jam, measured end-to-end.
So pitting makes the wire thinner. Thinner wire = higher resistance. That's why extension cords are rated per amps and limited in length. Ever try to run an electric space heater on a really long and/or thin extension cord? Overheats and melts. Use a big-.... thick extension cord or short cord and no issue. Also stranded wire carries more electrons. Electricity actually tends to travel on the outside of the wire for reasons a physicist could tell you. Stranded wire has more "outsides" than non-stranded.
So ohms = resistance = total friction
Volts = pressure = potential difference positive to negative
Amps = electron volume = total # of electrons per second
more or less. And there's a bunch of formulas for all this stuff. Google ohm's law. Or use a calculator Ohm's Law Calculator
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