rms & mean on segelei z max?
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I have a Zmax v3 flat top, I set it to rms, recommended by every review I saw prior to purchase. Love the thing. I also vape using the power setting instead of voltage because I switch back and forth from Evod 1.8's and Protank 2.6's. I vape the Evods at about 7 watts and the Protanks at around 9 watts. Great flavor and vapor, no dry hits. Enjoy your sigelei, I know I do.
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Simplified Explanation
AVG averages the voltage to determine how much to apply to reach setpoint. Useful in a constant output device like all of our original PVs and in VV using a POT (potentiometer) to regulate voltage.
RMS uses the square ROOT of the MEAN of the SQUARE'd average of PWM (pulse width modulated) supplied voltage. You can't perform a straight average of a sine wave as the highs and lows will cancel each other out returning a value of zero. So the square root of the MEAN is used which will always return a positive number, and the final result is squared in order to in order to return an accurate "running average" over the length of the varying signal.
RMS mode calculates the voltage required to maintain an accurate power output even though the voltage is pulsed to the atty.
If you use AVG mode on a device that applies voltage by PWM: The highs and lows are averaged. For an equal distant pulse wave expecting a 10w output the voltage will increase until the true average is achieved. It can hit more than twice as hard as you are expecting.
Because:
Total Power (wattage) generated is calculated by the average power out put over time.
Example:
10w for 30 minutes and 0 watts for 30 minutes would = 5w per hour average. (In AVG mode, in order to maintain a set-point of 10w it would output 20w in order to achieve it, not recognizing the "off" time).
In RMS mode, it knows the difference between the on time and off time and calculates the voltage required to maintain the power set-point accurately.
In AVG mode, it doesn't know that the power is being pulsed and increases voltage in order to compensate.
So what good is AVG mode?It is used on constant output power supplies to test the output and maintain the setpoint, I have no clue why they put it on a PWM device.
RMS mode is only needed because our power supply (in newer APVs) pulses voltage to achieve wattage set-point.
A thesis could be written on the subject to explain it in greater detail, I tried to keep it simple so the non tech guy/girl can grasp the basics.
(BOTTOM LINE)
RMS mode for pulsed atty power.
AVG mode for constant atty power.
Put it in RMS mode and forget about it.
AVG averages the voltage to determine how much to apply to reach setpoint. Useful in a constant output device like all of our original PVs and in VV using a POT (potentiometer) to regulate voltage.
RMS uses the square ROOT of the MEAN of the SQUARE'd average of PWM (pulse width modulated) supplied voltage. You can't perform a straight average of a sine wave as the highs and lows will cancel each other out returning a value of zero. So the square root of the MEAN is used which will always return a positive number, and the final result is squared in order to in order to return an accurate "running average" over the length of the varying signal.
RMS mode calculates the voltage required to maintain an accurate power output even though the voltage is pulsed to the atty.
If you use AVG mode on a device that applies voltage by PWM: The highs and lows are averaged. For an equal distant pulse wave expecting a 10w output the voltage will increase until the true average is achieved. It can hit more than twice as hard as you are expecting.
Because:
Total Power (wattage) generated is calculated by the average power out put over time.
Example:
10w for 30 minutes and 0 watts for 30 minutes would = 5w per hour average. (In AVG mode, in order to maintain a set-point of 10w it would output 20w in order to achieve it, not recognizing the "off" time).
In RMS mode, it knows the difference between the on time and off time and calculates the voltage required to maintain the power set-point accurately.
In AVG mode, it doesn't know that the power is being pulsed and increases voltage in order to compensate.
So what good is AVG mode?It is used on constant output power supplies to test the output and maintain the setpoint, I have no clue why they put it on a PWM device.
RMS mode is only needed because our power supply (in newer APVs) pulses voltage to achieve wattage set-point.
A thesis could be written on the subject to explain it in greater detail, I tried to keep it simple so the non tech guy/girl can grasp the basics.
(BOTTOM LINE)
RMS mode for pulsed atty power.
AVG mode for constant atty power.
Put it in RMS mode and forget about it.
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Great explanation, eHuman. "Put it in RMS mode and forget about it" is the best advice. This all goes back to the first VMAX and ZMAX models that did not have the RMS option. They hit way harder than what they were set to. 4.0v could feel like nearly 5 volts. It wasn't that hard to get used to, but the RMS option made them much more user friendly and consistent. Why they still include the AVG/Mean option, I have no idea.
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