Vapor Flask V3 DNA40 Clone thread

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Tpat591

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All I can find until announcement. NDA on everyone. Firmware upgradeable USB User computer interface. Talking special 3S 11v LiPo battery packs/triple cells in series. Speculation by others that it would be possibly be 70w in single cell mode appears incorrect but one would hope it would be compatible with single, dual or triple batteries.

Looks more narrow than DNA40 and might be around size of the SXK boards (my speculation).
 
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Tpat591

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Only pics I can find. Size is 71mm l x 18mm w.
 
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Mooch

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    Only pics I can find. Size is 71mm l x 18mm w.

    Hmm...
    - fused battery input.
    - 0.001 ohm current sense resistor, 1/2 the DNA40 value, potentially twice the current.
    - possibly a two-phase buck converter (regulator), with each phase handling one half of the current to keep component size and internal losses (heating) down versus a single larger regulator circuit.
     

    TheBloke

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    A 200W evolv with TC not my bag I just hope they get a working board not like the buggy DNA40.

    On another note does anyone know what this TC DNA clone board is pulled from a Zero its 50W with nickel purity and C/F

    It's the new SXK board, found in 40 - 60W variants in their Vapor Flask clones, Zero clones, rDNA clones (formerly, now probably discontinued) and their upcoming SXK Nebula device which looks like a Hana Modz box but with SXK's own branding.

    Also found in all of Geeco's devices, who are releasing most of the above list with their Geeco logo slapped on (a branded reseller.)
     
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    TheBloke

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    Hmm...
    - fused battery input.
    - 0.001 ohm current sense resistor, 1/2 the DNA40 value, potentially twice the current.
    - possibly a two-phase buck converter (regulator), with each phase handling one half of the current to keep component size and internal losses (heating) down versus a single larger regulator circuit.

    Can you explain further on the second point? Does this mean the new device is accurate to 0.001Ω, and are you saying the DNA 40 was half that accurate?
     

    Mooch

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    Can you explain further on the second point? Does this mean the new device is accurate to 0.001Ω, and are you saying the DNA 40 was half that accurate?

    Oop, sorry, I should have explained further...
    The current sense resistor, "R001" on the bottom of the board near the output solder pads, gives feedback to the regulator on on how much current is flowing thousands of times a second so constant current can be maintained, or current level adjusted. Its lower resistance value here, vs the DNA40, means that it can handle more current before heating up too much (which causes resistance drift and measurement error). I believe it's also a larger size than the DNA40 resistor and that helps it keep cooler at high current levels too.

    It could potentially be used to determine coil resistance by setting a particular voltage and measuring the current flow but the accuracy depends on so many things...sense resistor tolerance, voltage reading accuracy, ambient electrical noise and filtering, etc. in my opinion, we can't assume anything regarding this board's accuracy by it. There are 0.1% tolerance resistors though, even better than that. But the rest of the circuit has to be up to that level of accuracy too.
     

    TheBloke

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    Oop, sorry, I should have explained further...
    The current sense resistor, "R001" on the bottom of the board near the output solder pads, gives feedback to the regulator on on how much current is flowing thousands of times a second so constant current can be maintained, or current level adjusted. Its lower resistance value here, vs the DNA40, means that it can handle more current before heating up too much (which causes resistance drift and measurement error). I believe it's also a larger size than the DNA40 resistor and that helps it keep cooler at high current levels too.

    It could potentially be used to determine coil resistance by setting a particular voltage and measuring the current flow but the accuracy depends on so many things...sense resistor tolerance, voltage reading accuracy, ambient electrical noise and filtering, etc. in my opinion, we can't assume anything regarding this board's accuracy by it. There are 0.1% tolerance resistors though, even better than that. But the rest of the circuit has to be up to that level of accuracy too.

    Awesome, thanks so much for the details!
     
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