Dna 30 clone, ohm and watts - need answers plz

[Jcook]

I built a 1.0 ohm coil on a hana dna 30 and a full battery and it wouldn't fire below 13.0 watts until the battery was about half why is that

 

[steved5600]

If it's say a big coil like 24ga wire bunch of turns or like 3mm Inside diameter it will take longer to heat up. Beyond that I can't figure out why. Mine does not do that. If the above is the case try smaller wire fewer turns.

 

[mightymen]

dna 30 only has up regulation - no down regulation, what your seeing is ohms law at work. Its working at the battery voltage until it can regulate. Now if you set it at 25 watts it would regulate at 25 watts.


4.2volts X 4.2 = 17.64 div by 1.ohms = 17.64 watts. - no regulation yet.

3.7volts X 3.7 =13.69 div by 1. ohm = 13.69 watts - no regulation yet.

3.6volts X 3.6 =12.96 div by 1. ohm = 12.96 watts - (up regulation kicks in brings it to 13 watts setting)

3.2volts x 3.2 = 10.24 div by 1. ohms = 10.24 watts (up regulation kicks in brings it to 13 watts setting)

If you want it to regulate at 13 watts all the time use a 1.5 ohm coil.
4.2volts X 4.2 = 17.64 div by 1.5ohms = 11.76 watts. - Now it will regulate at 13 watts all the time.