Variable wattage

[Royaldrunker]

I'm just looking for a quick explanation on variable wattage and what it does to the volts?

I'm using hh357 at 1.5 ohms and a few rba at 1.7- 2.2 ohms, I find my happy vape at 8.5-9.5 watts. What is the voltage at so I don't blow the coil on my hh357 as I was told don't vape it past 4.1 volts....

Cheers

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[gmypc]

there are spreadsheets floating around the forums but I just use online calculators from time to time.

Online Conversion - Ohm's Law Calculator

In your case, for 1.5 ohms at 8.5 watts you're at 3.57 Volts (hmmm... hh357?) at 9.5 watts, 3.77 volts

To blow the hh357, you have to go past 11.2 watts

 

[Royaldrunker]

Ya Ty that puts me in the red on the hh357 not sure how accurate it is


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[recidivus]

MATHS! W = V2 / R
8.5-9.5w on the 357 you're looking at 3.6-3.8v, the RBAs are going to range from 3.8 - 4.6v depending on the resistance (1.7-2.2 is a wider spread)
Ohm's Law Calculations With Power

 

[DaveP]

Power (wattage)= voltage squared / resistance

Current (amperage) = voltage / resistance

Voltage = Current times resistance

Study the OHM's law pages and it will begin to make sense.


Voltage current resistance and electric power general basic formulas calculations calculator general electrical pie chart electricity calculation - electrical power formula general ohms law audio physics electricity electronics formula wheel formulas

 

[Taps]

*Holy cow. Lots of responses just in the time I typed it out. Just have to pick one I guess. Lol.


P=E*I and E=I*R are the two formulas that you can use and combine to pretty much figure out anything in vaping (Watts and Ohms Law)

P=Watts
E=Volts
I=Current
R=Resistance (ohms)

Figuring out voltage is is just plugging the two formulas together.

E=SQRT(P*R)
E=SQRT(9W*1.5ohms)
E=3.67volts

Additional combinations:

P=(E*E)/R

R=(E*E)/P

I'm good with electronics, but a lousy teacher so I hope this helps.

 

[betterBquietnow]

i dont usually take my hh357 above 4 volts b/c i primarily use it on a fixed volt mechanical mod, but when you consider a fresh battery comes off the charger at say 4.1 or 4.2 volts, im sure my hh has seen its fair share of vaping at around 11 watts, never had a problem, just keep that baby wet wet wet at all times

 

[Royaldrunker]

Wow great responses
Cheers

Ya im just new to vw so ty

 

[denali_41]

if you are using a kick ?? it will automatically lower the voltage to a safe level regardless of the watt setting,,

i tried it with a 1.2 coil and it worked fine,,but way too dam hott

 

[Royaldrunker]

Ya I'm using a new vamo


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[larktdl]

FYI .... Ohm's Law Calculator