how does PWM and amp affect the vape quality?

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Kyi

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I'm trying to understand the more technical part of vaping, something I never really thought too much about but since I'm 'flavor' chasing and whatnot, I figure I'd look into it. My question is, how does the PWM (or hertz, frequency, not sure what people call it) and amp limit of a device affect the vape quality? I know they say Provari and the iTaste VV3/MVP2 have a higher frequency than most mods out there, and while I own two iTaste VV3, I normally can't tell that much of a difference between my different devices. I do find it is a nicer vape than my Twist and Spinner batteries but I just attributed that to the better design and battery. Can someone explain to me please? And why do people like mech mods... I don't own one as I like regulated devices (makes me feel safer... paranoid of exploding batteries and shorts), but I am trying to find a better mod that provides a better vape. I am on the fence on buying a Provari, not that I don't want one but not sure if I can justify the price of it at this moment. I go back and forth a lot but you know how it is.
 

suspectK

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I don't think hardly any people on these forums would have the equipment necessary to measure the difference in heat/vapor production from a pulse/lower frequency mod vs high frequency. I have an IR camera, but it's not fast enough to see change in heat in a 33.3 times per second. Edit- there's a thread in the variable voltage section of this subforum that is a pretty heated argument about it.. Some say lower frequency feels harsher..I don't notice a difference.

PWM has a frequency measured in hertz.. just to clear that up.

A mechanical mod just uses the battery's charge and the resistance of the coil to give you the power levels/watts. I use mechanicals because A. I think they look better. B. I vape >20watts at all times. Clearomizers and cartomizers don't have adequate wicking or airflow to keep up with the heat.. and I'm a flavor chaser. Hardly any liquids I have right now don't shine at higher power levels.

If you were considering a mechanical, but didn't get into them because of safety, look into dna20 or 30 mods.. or other high powered boards. I'm getting a hana, whenever evolv catches up to the demand of the dna30 chip.

Provari is a solid mod, but if I buy a 6volt, lower amp rated mod, it would be a semovar.

There's also a new AC mod called the pipeline I'm considering getting before a dna mod that is 20watts AC.
 

Lessifer

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Here's how I understand it. A regulated device that uses PWM fires the coil alternating between 6v and 0v for varying lengths of microseconds to average out at whatever voltage you have it set to. The lower end devices, that uses the 33.3 chip, do this 33.3 times per second. The provari does this 800 times per second, so it is much closer to being a steady voltage. Some people say the lower mhz chips are basically quick frying and then cooling the liquid, and they can taste it, though I could never tell a difference.

A mechanical mod on the other hand delivers a steady current, whatever voltage the battery has minus the voltage drop of the connections in the device.

The amp limit is just the limit of how much power can be put through a coil. I think the vamo has a 3.5 amp limit. What this means is, when you approach the limits of what the apv is capable of handling, it will back the power off. For example, you can run a 1.2ohm coil on a vamo, and it is capable of pushing up to 6 volts BUT that would be 30 watts/5 amps. So, if you run a 1.2ohm coil on a vamo, it will actually stop upping the power at around 4.2 volts, which is 15 watts/3.5 amps. A device with a higher amp limit lets you go to higher power levels.

A mechanical mod, of course, has no built in amp limit. You can run it up to as high amps as you feel safe doing with your resistance and battery.
 

suspectK

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^this is a small picture, but it shows a vape-pro in pulse/33.3Hz mode at 5volts.. I set the point on the meter to show the lower voltage and frequency, so this chip goes from 5volts to 4.24volts 33.3 times a second.
 

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