SXmini M Class (TEMP CONTROL)
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For a quick reference...a .10 ohm coil, at 50watts/joules will be at 2.24volts, which comes out to 22.32amps.
I just used vapecalc for that, I don't know what extraneous factors or variables affect those numbers on a regulated device in TC mode
When I am firing my .122 resistance coil at 50J I see the voltage counter go as high as 4.24 volts. On vapecalc it shows 145.97 watts and using 34.59 amps. If I change the resistance to .08, which is in Yihi's stated range, and if it still uses 4.0 volts it goes to 50 amps. I don't have anything with such low resistance to see how many volts show up on the SX so that is only a guess. I am thinking this is one of the reasons why Yihi has limited the joules to 50J and even with the dual stack tube.
It's not unusual to hear a small hum from a regulator working at high frequency, and it's not really a concern. The IPV3 has always done this, although I never heard anyone complain about it. Interesting enough, the IPV3 is only buck circuitry I believe (series SX330). I wonder if this hum is only present when using the buck regulation and not boost. That might answer why only some hear it. It might depend on your coil resistance, joules setting, and current battery level which would determine whether you're bucking or boosting. It might also only occur when rapidly switching between buck and boost during regulation. Either way I would doubt it's really an issue.
Re: the hum audio clip posted earlier. I think if you listen carefully while playing it backwards you will hear "Paul is dead". Might just be me.
Re: the hum audio clip posted earlier. I think if you listen carefully while playing it backwards you will hear "Paul is dead". Might just be me.
We can't really go off baseline resistance. Keep in mind, the resistance of nickel increases with heat. Your .122 Ohm coil at full temperature may be something closer to .3 Ohms. Maybe higher... At .3 Ohms, that's right around 60W / 14.13A, which is a bit more in line with the capabilities of this device. Although, it does state it has a max amp limit of 40A, which is pretty astounding.
Re: the hum audio clip posted earlier. I think if you listen carefully while playing it backwards you will hear "Paul is dead". Might just be me.
If it does say that, it was completely unintentional
I don't even know Paul! LoLI seriously am about to load up the clip in audacity and play it backwards though, just cause you said that... LoL
You don't know Paul McCartney? What planet are you from?If it does say that, it was completely unintentional
I seriously am about to load up the clip in audacity and play it backwards though, just cause you said that... LoL
after reading all this talk about a buzzing i took a listen to my device while firing in tc mode. yeah its there. its pretty faint on mine, as i had to have my ear up to the device to hear it. the sound of the coil firing and the airflow definitely drown it out.
That's pretty condescending. People come here to share and learn. Telling someone they are wrong and not pointing out where is rude and unacceptable. Saying "you're wrong but I don't want to discuss it" is BS.
I quite clearly and deliberately said in 2 previous posts that Watts was "Joules over Time" - deliberately so it wouldn't be confused as "per second" ... you even copied it..
If you don't want to discuss it, and don't want to take the time to politely explain where my error occurred, don't post back.
Have a wonderful day.
This might be an over-simplification, but this is how I would explain it from a lay perspective: An inductor is a device that stores energy in a magnetic field based on the stable movement of current. When the current is not stable (e.g., it increases, decreases, reverses), the magnetic field seeks to resist that change. The greater the size of the change in current, the more the magnetic field seeks to resist that change and accordingly the greater the impact on the magnetic field. So when you're using PWM (as TC does) the more you increase the power, the greater that disturbance to the magnetic field is going to be, and it's the oscillation of the magnetic field that causes the wires in an inductor to audibly shake (assuming coil noise is the problem).
Soapy might be an indication of not enough heat. 290F is almost 100F below PG's vaporization point, and VG is even higher than that. Crank up the temp limit to 400+ and see what happens with the flavor, disregard the warmth.
What's your normal build on an Erl? Ohms and wattage and wire gauge? If you were high resistance, low wattage vaping before, it could take some time to get used to a warmer vape (and running an Erl at 400-450 is barely warm enough for some of us!)
After day 1 with my new sx mini i have to say this mod is fantastic. The temp control is great my liquid has never tasted so good and consistent, its a complex flavor that was always good but now i really can taste all the flavors. Anyone that's on the fence get it you wont regret it and i have not touched any of my other mods dont know if that's good or bad. Using the smok gimlet and the ohms have held true all day so it seems to be a good tank so far.
I remember when the 1st release SXmini S was released, there was an issue with the device not being able to reach it's maximum voltage output of 9.5v. YiHi soon came out with a firmware update that addressed it. That's the nice thing about a user-upgradable board. More than likely, there will be one along to address the buzzing reported on the M Class, if YiHi warrants it necessary..
More than likely, there will be one along to address the buzzing reported on the M Class, if YiHi warrants it necessary..
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It does and i changed my spring over to the new gold ones and it works fine now. Thank you for the help
Two ways I know of (there may be more) to prevent an inductor for buzzing are:I remember when the 1st release SXmini S was released, there was an issue with the device not being able to reach it's maximum voltage output of 9.5v. YiHi soon came out with a firmware update that addressed it. That's the nice thing about a user-upgradable board.
1) To physically stabilize it, especially if it is laminated.
2) To reduce the frequency at which it cycles.
The second remedy could be implemented via software.
Based upon Vlad's scope results and dams audio file it seems that it is cycling at 60hz.
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