Define RMS & AVG

[eHuman]

RMS gives accurate settings in volts or watts. I have used both AVG and RMS - there is no noticeable advantage using AVG in volts mode.

I'm glad you pointed that out, as I mis-spoke. Our APVs are still pulsing voltage so AVG mode has the same ill effect whether in VV or VW mode.

I set my ZMax2 in RMS mode when I first turned it on and have not changed it either. Odd that the manufacturers leave it as an option but don't recomend it's use. It should only be available on non voltage pulsed models.

 

[kiwivap]

I'm glad you pointed that out, as I mis-spoke. Our APVs are still pulsing voltage so AVG mode has the same ill effect whether in VV or VW mode.

I set my ZMax2 in RMS mode when I first turned it on and have not changed it either. Odd that the manufacturers leave it as an option but don't recomend it's use. It should only be available on non voltage pulsed models.

I think it was just easier and less expensive to add in RMS. There are some people who like AVG - with two 18350s at high watts they can pack a punch. Too high for me though.

 

[vapomike]

I'm not sure about all the technical jargon behind it as others seem to be here. In real world usage for me I have noticed on a 1.5 atomizer it seems to vape cooler no matter how high I put the wattage. Though I can set it to 11W and get a warmer vape. I personally prefer the wattage setting and avg.

 

[eHuman]

Let me try a simplistic approach to the OP
Non APVs apply a set voltage in oder to achieve setpoint. 5v steady _____________________
APVs pulse a voltage in oder to achieve setpoint. (5v, 0v, 5v, 0v) -_-_-_-_-_-_-_-_-_-_-_-_

Given that our voltage is being pulsed in the PVs we are talking about:
AVG mode averages the 5v and 0v and sees 2.5v and attempts to increase the output to 10v in order to average the 5v setpoint.
RMS mode "ignores the 0v offtime" and calculates 5v is needed to maintain the 5v ontime setpoint.
AVG mode is accurate only with a non-fluctuating input voltage
RMS mode is accurate whether the input voltage fluctuates or not.

AVG mode used with a pulsing power supply is bad form, and very inaccurate.

 

[eHuman]

In real world usage for me I have noticed on a 1.5 atomizer it seems to vape cooler no matter how high I put the wattage. Though I can set it to 11W and get a warmer vape. I personally prefer the wattage setting and avg.

No matter how you slice it, higher wattage equates to warmer vapor. (wattage basically means "heat produced").

The bennefit of using RMS mode: You can set and forget your favorite wattage, then it does not matter what Ω (resistance) atty you put in your PV it will auto correct the voltage needed to achieve the same wattage output.

Using wattage and AVG settings as you do: You are not vaping at the wattage you are set to (see my previous post). If you keep your wattage setpoint but change to a different Ω atty, you WILL NOT be vaping at the same wattage as before.

In your setup, if you have found the settings that work for you and you always use the same Ω atty then you won't see a change. If you put a different Ω atty in, it WILL change. It will either vape cooler or hotter and may pop your new coil.

 

[eHuman]

I have noticed on a 1.5 atomizer it seems to vape cooler no matter how high I put the wattage. Though I can set it to 11W and get a warmer vape.

1.5Ω is cooler no matter how high a wattage setting, but 11w is warmer? You understand that statement contradicts itself right?

It's sort of like saying that your bathtub doesn't get any fuller no matter how much water you put in it, but if you put alot of water in it then it will get fuller.

 

[Rader2146]

This is probably as simple as the explaination can get...

RMS (Root Mean Square) Voltage is easiest described as the the equivalent constant DC voltage. Most of the mods coming out of China have a pulsed output; ~6v on, 0v off.

That is my Smoketech VV Gripper set to 3.0v. It has 6v half the time, and 0v half the time; Average (AVG) of 3.0v. When you look at wattage (assume a 2.0 ohm coil) you get 18 watts for half the time, and 0w; average of 9 watts. Put 9 watts and 2 ohms into ohms law and you end up with an RMS voltage of 4.24v. Meaning, what you though was 3.0v actually feels like 4.24v.

The RMS modes of the newer mods have just adjusted the On/Off ratio so that the average wattage (and corresponding output voltage) is equal to what you set the display to.

 

[vapomike]

1.5Ω is cooler no matter how high a wattage setting, but 11w is warmer? You understand that statement contradicts itself right?

It's sort of like saying that your bathtub doesn't get any fuller no matter how much water you put in it, but if you put alot of water in it then it will get fuller.

Sorry must have been sleeping at the wheel... What I meant to say was, Though I can set it to 11W and avg to get a warmer vape. Personally I use nothing but Cisco 1.5 306 and can not comment on the real world implications of the AVG consistency between different atties. The Vamo seems to struggle with low resistance on a single cell in RMS, and the AVG setting lets me achieve a warmer vape.

 

[eHuman]

Sorry must have been sleeping at the wheel...

You know I was just poking at you