Is TC sub-ohm?

[footbag]

Obviously we are building our coils to resistances of below 1 Ohm, sometimes below .1 Ohm. It's required for TC.

I've heard that the resistance of the coild rises quickly with temp so were not drawing the amps you would expect with a coil at that low of a resistance. But, what does the resistance rise to?

My device doesn't tell me the actual resistance. Only my locked resistance.

TC has been interesting. You have to rethink everything. I'm just wondering exacly whether it's made the term sub-ohm irrelevant.

 

[Completely Average]

A .1ohm coil will rise to somewhere in the .5 to .6ohm range under normal operating temperature. You would need to heat a large coil very hot for it to exceed 1ohm.

 

[TheotherSteveS]

Obviously we are building our coils to resistances of below 1 Ohm, sometimes below .1 Ohm. It's required for TC.

I've heard that the resistance of the coild rises quickly with temp so were not drawing the amps you would expect with a coil at that low of a resistance. But, what does the resistance rise to?

My device doesn't tell me the actual resistance. Only my locked resistance.

TC has been interesting. You have to rethink everything. I'm just wondering exacly whether it's made the term sub-ohm irrelevant.

to my mind, the advent of regulated VW mods pretty much made it irrelevant anyway...and yes I know people still use mechs!!

 

[footbag]

A .1ohm coil will rise to somewhere in the .5 to .6ohm range under normal operating temperature. You would need to heat a large coil very hot for it to exceed 1ohm.

Thanks. I wasn't thinking it would be so high. still sub-ohm, but it's more reasonable to see how they can keep these devices safe.

 

[retird]

The resistance rise depends on many factors but as an example I've seen a nickel wire coil that starts at a cold resistance (say room temperature) of 0.157 ohm read at 0.336 ohms after firing when fired at 20 watts with a temperature setting reaching 430F. As the temperature of the coil rises while firing the current reduces.

Temperature Coefficient of Resistance : Physics Of Conductors And Insulators - Electronics Textbook

 

[Lemwise]

What we call sub-ohm isn't actually sub-ohm. Even a resistance of 0.000000000000000000001 ohm is still a positive value and therefore not sub-ohm.

 

[Vooper]

It's sub 1ohm, which is kinda the point.

 

[coilburner]

What we call sub-ohm isn't actually sub-ohm. Even a resistance of 0.000000000000000000001 ohm is still a positive value and therefore not sub-ohm.

nothing is actually sub ohm

 

[TheotherSteveS]

i think this thread will go on my ignore list...jeez...pedantry in vaping....lol!