I suspect that may be part of the resistance reading routine.
I suspect that may be part of the resistance reading routine.
I don't really see any correlation with that. I can't imagine any reason for a voltage increase and duty cycle increase with each higher wattage to test the resistance. Did you look at the scope traces?
One of the things that's become apparent about Evolv's products is that their spec sheets, as well as what Brandon is willing to say -- either in answering inquiries via e-mail, or in interviews -- is always quite conservative. In other words, in actual testing, the product always out-performs the specs and claims. You can see that in those numbers: The spec sheet says a dna will produce a maximum of 8.3V. It actually produces more. The same is true on the other end. The spec sheet says it will go down to 4.0. It actually goes lower.To answer the question in your notes, the reason the dna didn't hit 30w at 2.7 ohms is you reached the chip's upper voltage limit. Which, it should be noticed, is also different from what the specsheet says.
I suspect that may be part of the resistance reading routine.
One of the things that's become apparent about Evolv's products is that their spec sheets, as well as what Brandon is willing to say -- either in answering inquiries via e-mail, or in interviews -- is always quite conservative. In other words, in actual testing, the product always out-performs the specs and claims. You can see that in those numbers: The spec sheet says a dna will produce a maximum of 8.3V. It actually produces more. The same is true on the other end. The spec sheet says it will go down to 4.0. It actually goes lower.
No. Pbusardo pointed out resistance readings on his E-vic review (I believe thats the one) And it is but a blip...Like a heartbeat blip across the screen. This graph shows a duty cycle...But don't trust me...I'm just guessing really- Dave.EDIT: See 29:56 of video
Yes I did. The behavior is so different than during normal regulation to suggest it is doing something else entirely.
Pretty sure the Evic does not use a DNA 30 board so that's kind of comparing apples to oranges. Don't know much about that device so correct me if I'm wrong. I will say I've briefly looked for a signal that tests the resistance and have had no luck in finding it, no heartbeat or blip that I've discovered. Maybe because I'm looking in the wrong place, maybe it's carried on the initial signal and is blending in idk.
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Yes it is a very different signal from once it gets above the "unregulated" voltages which makes me think this thing "is doing something else entirely", but what is the question.![]()
The PWM looks the same regardless of the Board...A duty cycle is a duty cycle(seems to me) So a Resistance/load check should also appear the same(it seems) Who knows...Just trying to participate really. Great job on all your work so far.
Trying to figure out what the Chinese are doing is an exercise in futility
The appearance of a trace is just that, a signal. You can do many things with a signal. Or nothing, for that matter.
So if one was currently in the market for a DNA 30 device, are you advising to wait a bit?
And if so, theoretically how long should one wait........theoretically speaking?
;-);-)![]()