Evolv Technology Owners Discussion Thread

[Confuzzled1969]

Someone explain these scopes to me, if u would be so kind.

In the "coil wet" pictures, you are seeing the voltage peak quickly for the preheat function and then taper off as it reaches temp protection and the voltage tapers down....

In the "coil dry" pictures, you are essentially seeing the same thing except the temp protection kicks in much earlier as there is no liquid to cool the coil and the voltage tapers down.

While you see differences in the picture, I seriously doubt you would notice a difference in the vape.

 

[IanDVaypes]

ok just try reconnecting

I believe I tried that already. Hold on, let me check........ yep still nothing. RMA V2 already in process.

 

[xtwosm0kesx]

In the "coil wet" pictures, you are seeing the voltage peak quickly for the preheat function and then taper off as it reaches temp protection and the voltage tapers down....

In the "coil dry" pictures, you are essentially seeing the same thing except the temp protection kicks in much earlier as there is no liquid to cool the coil and the voltage tapers down.

While you see differences in the picture, I seriously doubt you would notice a difference in the vape.

This is what i assumed i was looking at, but you know what happens when you assume...lol. Thanks!

 

[Confuzzled1969]

This is what i assumed i was looking at, but you know what happens when you assume...lol. Thanks!

Your welcome, in most scope pictures, the vertical scale is voltage and the horizontal scale is time, when keeping this in mind the pieces of the puzzle seem to fall into place.

If they ever insert frequency into the equation it will be possible for the horizontal scale to mean something different, but even then the veritcal scale is still amplitude or voltage...

 

[dr g]

The traces are fairly close in practice, though on the KX there are some interesting changes in the scope trace, it almost seems to have some kind of shift in mode at a certain point. IMO the evolv trace looks more "correct" particularly the dry coil.

BTW I'm fairly sure it's wattage, voltage would be misleading due to the resistance rise.

 

[Confuzzled1969]

BTW I'm fairly sure it's wattage, voltage would be misleading due to the resistance rise.

That is entirely possibly given the variable resistance of nickel wire, which is not typical of a lesson in ohm's law.... however, in over 25 years, I have yet to see any scope that shows power on the veritical scale... they all show voltage.... Wich is ultimately how most devices regulate power... Very similar to Evolv's temp regulation through resistance checks, most power regulation is done through voltage monitoring...

 

[dr g]

That is entirely possibly given the variable resistance of nickel wire, which is not typical of a lesson in ohm's law.... however, in over 25 years, I have yet to see any scope that shows power on the veritical scale... they all show voltage.... Wich is ultimately how most devices regulate power... Very similar to Evolv's temp regulation through resistance checks, most power regulation is done through voltage monitoring...

Evolv's is not, but that has nothing to do with these traces.

You're right that this is voltage, looking at the large image it shows the 1V scale. There is almost no way to interpret the traces qualitatively ... at least it's a heck of a lot more difficult.

 

[Confuzzled1969]

Evolv's is not, but that has nothing to do with these traces.

If this is voltage, there is almost no way to interpret the traces.

Look at the pictures a little closer, it clearly shows voltage in the upper left corner and time a little bit to the right....

 

[dr g]

See the edit above. It is extremely hard to interpret these traces because it is voltage.

 

[Confuzzled1969]

See the edit above. It is extremely hard to interpret these traces because it is voltage.

Agreed... But I need more characters to post...

 

[dr g]

we would need resistance or current monitoring to tell whether one is regulating better than the other.

 

[Confuzzled1969]

we would need resistance or current monitoring to tell whether one is regulating better than the other.

I think the resistance monitoring is happening in any temp protected device, that is precisely why Nickel wire is used.... very linear temp coefficient...

Current monitoring in such a small device is problematic though....

Don't worry Doc, I agree with most of what you say.... Your a little rough around the edges, and tend to drop your opinions without much candor, but I have no doubt we could work together.... Ever get into high power RF transmitters?

 

[jazzvaper]

^^^^^^^ grin

 

[Confuzzled1969]

^^^^^^^ grin

What are you grinning at exactly???

 

[dr g]

I think the resistance monitoring is happening in any temp protected device, that is precisely why Nickel wire is used.... very linear temp coefficient...

I mean for analysis. We would need to see what's going on with the coil to determine how well regulation is occurring.

Current monitoring in such a small device is problematic though....

For some

 

[Confuzzled1969]

I mean for analysis. We would need to see what's going on with the coil to determine how well regulation is occurring.



For some

Ok, you have my attention with this one...

How the hell do i get an accurate power or current measurement in something this small?

Keep in mind, the lowest power I deal with is 300W, and I have yet to find a detector that is smaller than 3X3X2... That is inches BTW....

 

[dr g]

Ok, you have my attention with this one...

How the hell do i get an accurate power or current measurement in something this small?

That's a question for evolv ...

But you can see the attraction, at these resistances current monitoring is far more accurate.

 

[Confuzzled1969]

Well, maybe John will answer a few questions about it....

I would love some power detectors that could sit INSIDE my transmitters instead of on top of the the filter cavity....

Right now, I have this huge power detecter on top of the cavity, and I could really care less about the reflected power on top, the cavity filter stops that power... I am only worried about intermod within the Tx....

 

[HolmanGT]

Well, maybe John will answer a few questions about it....

I would love some power detectors that could sit INSIDE my transmitters instead of on top of the the filter cavity....

Right now, I have this huge power detecter on top of the cavity, and I could really care less about the reflected power on top, the cavity filter stops that power... I am only worried about intermod within the Tx....

They do make micro bolometers and they can be very, very small. "Google is your friend".

 

[215Z]

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