Resistorless 5v Prodigy V2 - Final Specs - Loaded Voltage Video

[BOGDOGMAX]

stgardner - if your using a lower resistance 510 atty - then you will actually have a LOWER voltage drop across it than my higher resistance 901. (This makes perfect sense too!)

The thing to remember is that we have a fixed voltage that is split between to resistors (the switch and the atty)

Simple example is to take a 2 ohm atty and a 1 ohm switch (3 ohms combined).
The atty would get 2/3 of the voltage and the switch would get 1/3

Now if we drop the resistance of the atty to 1 ohm and the swtich is 1 ohm
then the voltage would be split equally between the 1 ohm atty and the 1 ohm switch.
Its the ratio that changes between the two.

So for your example of 6.5 Volts with a 2.5 ohm atty

with a 1.2 ohm switch you would get 4.4 volts
with a 0.5 ohm switch you would get 5.4 Volts

The problem is that voltage tells us nothing about how much work is being done.

The only way to measure the work is by determining wattage.

assuming 0.5 ohm switch and 6.5 volt battery

your voltage drop with a 2.5 ohm atty is 5.4 volts, but your wattage is 11.1 watts
my voltage drop with a 3.6 ohm atty is 5.7 volts, but my wattage is only 9.0 watts

Here are some wattages for e-cigs with no resistor switch

3.7 volt battery with a 3.6 ohm resistor - 3.8 watts
3.7 volt battery with a 2.5 ohm resistor - 5.4 watts
6.0 volt battery with a 3.6 ohm resistor - 10.0 watts
6.0 volt battery with a 2.5 ohm resistor - 14.4 watts (snap, crackle, pop)

hope this helps!

 

[stgardner]

bogdogmax, that was absolutely what I needed to know. In a real life example, I compared my Prodigy V2 to my Silver Bullet. I used the same 510 atomizer on both and the same LiFePO4 3.0V (6V total) batteries on both. The batteries were freshly charged & I dripped 4 drops on the atty. I immediately got a burnt flavor with the Silver Bullet (watts are just too high for the atty/battery combo I use). Without even re-dripping (I'm a dripper), I moved the batteries & atty to the Prodigy V2, and the burnt taste was completely gone. I had my wife try this test also, just to see her opinion, and she agreed. She literally said, "Yuck!" when she took a toke off the Silver Bullet. After using the V2 she could literally taste the difference. It was so obvious after going a week or so exclusively with the V2, but initially it was harder to tell. So, if I gained anything with my inquiry, I have at least found a cool slogan for PureSmoker. Here goes:

"Prodigy V2 - Taste The Difference!"

Thanks again, your post was extremely educational and very helpful,
Scott

 

[Synthnadz]

Has anyone actually ever tested the V2 with the resistored, titanium disc under load other than Steve? I'd like to know the 'final verdict' with freshly charged batts.

All of this speculation yet no results - I want to know! ;-)