DNA 200 Watt
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Titanium Grade 1 (providing it its chemistry is within the specification) has almost zero variability in temperature coefficient of resistivity. It' is also extremely insensitive to minor chemistry variations and the TCR is almost perfectly linear.
None of these things apply to Nickel wire because the Curie temperature is greatly affected by minor chemistry etc. and consequently TCR is extremely sensitive to minor chemistry variations. Nickel TCR is also nonlinear.
If someone thinks they can get by with setting a single Nickel TCR (which they really can't) then setting a single TCR value for Titanium is a total piece of cake.
Duane
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Hopefully wire vendors will supply the TCRs on the product details page in the future so we can get the best from any suitable alloy. The format is a pretty generic plain text list of normalised resistances at a few temperatures that could be adopted by any board maker.
Ari from Sweet Spot Vapor just sent me a .csv for their .5mm wire
(I can't upload .csv file type here)
Go to TCR | Steam Engine | free vaping calculators and copy the DNA 200 Output 
I knew about SteamEngine and Evolv have offered to host a list, but just saying in an ideal world the vendor would always supply the correct TCR with the wire.
Playing with a box design utilizing passive heat sinks in the board with active cooling via
AD0312HB-D50: ADDA INC: Fans & Cooling
And trying to think of the best way to power the fan only while hitting the mod. Using a separate fire button vs the onboard and wiring this guy to a mosfet with a splice off the switch for the mosfet gate would work without affecting the chip... Right?
AD0312HB-D50: ADDA INC: Fans & Cooling
And trying to think of the best way to power the fan only while hitting the mod. Using a separate fire button vs the onboard and wiring this guy to a mosfet with a splice off the switch for the mosfet gate would work without affecting the chip... Right?
John (Evolv) has said he doesn't think heat sinks are needed and you would have to be vaping so much at 200 W to trip the chip too hot protection he didn't anyone would ever vape like that. IIRC this was assuming the board was bolted into a metal case with metal mounts.
to be fair. evolv also said they didn't see any point in more than 40 watts for vaping.
They've said a lot of things over the past year [emoji14]
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I totally agree but so far heat has already been a mild issue with me, not tripping the protection but I like to vape 150 watts if cloud chasing and this is going to be a SLS or SLM printed box not metal built specifically for high wattage use. Looking for 3-4,000 maH batteries as well. But then again I've carried huge boxes before.
tcr setting would be nice but I've been getting a fantastic vape with titanium on my rdna and we all know that device doesn't have it.
Using titanium on the rDNA is just inaccurate as all hell. pbusardo already showed that. To each their own but if I buy a TC device I kinda want it to work well instead of being off by a hundred degrees. but atleast the DNA 40 doesn't have the power to super overheat titanium wire.
It's almost as bad as people using nickel and titanium in normal mods and going "WOW SUCH A FANTASTIC VAPE".
But setting a TCR for a hybrid Kanthal/Titanium fused Clapton or similar that works with Temp..... Well that's WHY I have one... And yes it works AMAZINGLY for that coil as well
Not even close. It holds a temp, the temp is just off. Grasping straws are we? Anywho, the proclaimed tc king at the moment is the Dicodes, and if in Fahrenheit, the temp is off no matter what you use.
I think that is what he meant, that the temperature is way off. A great vape is not necessarily an accurate vape. The dicodes is good yeah but not without its flaws as a device.
Pretty sure its been mentioned but the "custom" coil material option already loads the correct TCR for Titanium.
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