So confused. I dont wana die.
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The board does the calculations. I'm not really following what you mean by that, to be honest.
Read this and then you can tell me if you agree with the statement Calculating battery current draw for a regulated mod | E-Cigarette Forum
The board determines what goes to the coil NOT what is being drawn from the battery(s). Your wattage setting determines the demand on the battery(s)
The only difference between what I am saying and what he is saying is that he is solving for amperage given wattage and voltage.
which instead of I=v/r and IV=W, you get I = w/v.
It's still ohms law. I don't see how that refutes my point.
Ohms law defines amperage, which defines wattage.
Your statement above says a 20 amp battery is good for 84 watts, that is NOT the case in a regulated device.
if it is safe in a mech mod, it's applicable to a regulated mod because of the internal resistance on the device is higher than a mechanical mod. I'm talking about purely theoretical limits.
In practice, it's actually going to be lower at the same resistance, because of the internal resistance.
I'm not saying that it's the exact same thing, but it's not irrelevant with regulated mods.
In all cases, power is defined as:
P - Work done per unit time (joule per second)
Q - Electric Charge (coloumbs)
V - Voltage
and t in time.
P = (VQ)/t
which is equivalent to P = V/I.
1 coulomb is equal to 1 amp per second. Which essentially simplifies to N amps over 1 second in this application.
Edit: I forgot to define a joule.
One joule is equal to the amount of energy dissipated when something moves a current of 1 amp through a resistor of 1 ohm for 1 second.
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Dude, the highest demand on a battery in a mechanical device is at a full charge, the highest demand on a battery in a regulated device is at low battery cutoff, then add the inefficiency of the regulator. THEY ARE NOT THE SAME.
Okay, if that's true, it's possible that I'm missing an equation for the right calculations.
I'd like to see it if you could share it.
Okay, I read what you posted, and all he's doing is changing the constant value by which you're dividing your resistance.
It doesn't make ohms law irrelevant for regulated mods.
It's in fact, the exact same thing as ohms law. The only change is the constant in the numerator.
It IS the same thing.
Here is an example of real world unregulated mod operation. The build is .47Ω and the batteries are VTC5A charged to a full 4.2V.
Across the coil 7.8V is being applied.
Across the batteries we see the same 7.8V being provided (+/_ 1% approx) You can see the batteries come under load in the circled area.
The pair of series VTC5A's are running at 7.8V under a load of .47Ω providing approx 16A continuous and developing just over 124W.
This is where Mooch's recommendations are essential to most of us who don't do actual measurements. We can still be safe.
As far as published specs, give me a break. Two battery mods running at 225W and 18650 batteries putting out 40A? Not real world.
Across the coil 7.8V is being applied.
Across the batteries we see the same 7.8V being provided (+/_ 1% approx) You can see the batteries come under load in the circled area.
The pair of series VTC5A's are running at 7.8V under a load of .47Ω providing approx 16A continuous and developing just over 124W.
This is where Mooch's recommendations are essential to most of us who don't do actual measurements. We can still be safe.
As far as published specs, give me a break. Two battery mods running at 225W and 18650 batteries putting out 40A? Not real world.
This is a fascinating post. Thank you for sharing this.
What model oscilloscope are you using? I was looking at getting one.
I got the Siglent SDS 1202X-E. Sweet scope at a sweet price.
Excellent. I'll have to write that down on my list of equipment I would like to pick up. Thanks for the recommendation
I've been vaping this build for a few days actually. The dipper is a Vandy Vape Pulse so the airflow is on the side and its actually working very well. after i primed the coil and cotton the airflow holes show up. thanks for all the advise everyone. i will let you know if i blow up before i can install a new battery. i will say, the flavor on this thing is pretty good i will attach some more pics
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If i get some money, I will invest in a a Lost Vapes Tirade. Potentially a fire extinguisher just in case as well.
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