Interesting concept
Foggy...I remember the brouhaha that erupted when it was discovered that the iStick-20W did
not step-down accurately...
But with it...if you normally vaped at
7W but set it to
5W...you'd get the vape that you were used too...
Might the same principle apply to an "inaccurate step-down" 120W Mod???
If I normally vape at
15W...put in a fresh coil...then slowly move up from 8W to find my "perfect" vape...
Does it
really matter if I end up with the
screen reading
10W...
..
This is certainly no longer timely, but I wrestled a lot with the iStick 20. So I made a sticky for my Sticky.
How to regulate the iStick:
Screen voltage (mean) RMS Effective voltage
5.5 -- 5.63
5.4 -- 5.58
5.3 -- 5.53
5.2 -- 5.47
5.1 -- 5.42
5 -- 5.37
4.9 -- 5.31
4.8 -- 5.26
4.7 -- 5.20
4.6 -- 5.15
4.5 -- 5.09
4.4 -- 5.03
4.3 -- 4.98
4.2 -- 4.92
4.1 -- 4.86
4 -- 4.80
3.9 -- 4.74
3.8 -- 4.68
3.7 -- 4.62
3.6 -- 4.55
3.5 -- 4.49
3.4 -- 4.43
3.3 -- 4.36
3.2 -- 4.29
3.1 -- 4.23
3 -- 4.16
How to use this table?
Suppose we want to vape at 10 watts. For example, we screw a 2 ohms atomizer. We select 10 watts. The screen does nothing but show the direct application of Ohm's law, so it’s showed 2 ohm of resistance, 10 watts selected and 4.5 volts delivered.
Now, we go to the table to find the closest value to 4.5 in the RMS column, it is 4.49 and it corresponds to a 3.5 voltage in Screen Voltage (mean) column . Now we reduce the power, watts, until the screen shows 3.5 volts. That's it, we can vape at 10 watts.
In 2 ohms resistance example, screen is showing 6 watts, but actually we are vaping at 10 watts.
The bad news is that the iStick is actually a variable voltage mod 4.16 to 5.5 volts, not 3 to 5.5 volts.
If for some reason we use the variable voltage mode, it is even easier. When selecting screen voltage it will deliver effective volts in RMS column. But the watts in screen are still untrue.
