I was wondering, how do you check resistance on vivi style or like premade coil heads? I have a multimeter with a resistance seeing to measure them, just not sure where to place the probes to get a reading
On any atty, the coil wire tails will secure in two places... outside the insulator, which is ground or negative, and into the atty body - the other tail secures inside the insulator, in contact with the center or positive terminal.
When the atty is screwed onto a battery, the positive center terminal contacts the center post of you 510 (or eGo) connector, the atty body contacts the battery ground (body)... and makes a complete circuit, when you hit the button.
When you hit the fire button, "power" flows
through the circuit, like a light bulb for lack of a better analogy - the coiled wire creates a concentrated resistance point and starts to heat. With out a wet wick, it will heat to glowing... with one, it simply heats up and vaporizes your
juice. The "measured" resistance (among other things) determines how fast and how hot that coil gets.
So...
always the body ground and the center pin positive to check resistance. Don't touch the test leads when testing resistance... they may pick up resistance in your body and skew the readings. Always test your DMM to see if there is "internal" resistance by simply touching the two probes firmly together. If you read resistance... you subtract that from the total. I.E. 0.3Ω in the meter? Then if you read 2.4Ω, you really have 2.1Ω.
Sorry... felt a twinge of a "teaching moment"... and couldn't resist.
