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lemmy wrote:Yeah, your right about the negative regulator. I wasn't thinking. And yes, negative regulators are readily available, I just was trying to build with stuff I already had.
I was just messin' with you.
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lemmy wrote:But one thing, the guy in the article you posted wtih the +/- 15V supply is using 16VAC, but that is more ke 22V pk because likely the 16VAC is an RMS value. The RMS reading of the signal I posted would be more like 5.5VAC RMS (8Vpk/1.414).
Which is exactly why I said: ' Now...before you go off on how to measure AC and all, I do realize the above link isn't any kind of exact reference to what you're after. My point is the full wave part of it, and the losses involved. '
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lemmy wrote:
Another thing, I am not sure about the internals of the Vapor. I am not sure if having GND at (for example) -6V would screw up the coil tach reading. It would likely be fine, but I just don't know how their tach sensor works. Plus I am trying to get as clean of a supply as possible, so using the chasis ground might work best. If I can get a solid 6V-7V at idle, then I will go with that. If not, then I will try the +/- design and run the ground as the -.
Ask 'em.
As I understand their design, the power input has nothing to do with the RPM sensor input. Besides, I don't understand how it
could!, either.. You don't want ANY reference to tie from something that is putting out tens of thousands of volts into a lighting/logic circuit.
Something I do find odd: Their recommendation is to
NOT tie into regulated power. Did you read that in the TT post? Supposedly the switches in such circuits bounce, and that causes grief for the logic. They
DO say to connect to the STATOR side. The Vapor is supposed to work with either AC or DC..so whether your lights were on or not, (if on, you would get regulated AC, if off you would get UNregulated AC), the waveform type would be as required.
But...with the switch off, you get
LOTS of volts..over 100. I dunno if the Vapor could handle that. But that IS what they suggest.
Talk to 'em.
tech_support@trailtech.net I believe is what you're after.
Ask them if the Vapor can handle UNregulated AC. They should know if the Vapor will run on pre-regulated power on the KDX.
It's possible to have a light switch simply turn on the lights...to have it switch 'on' already regulated power. That is
NOT what the light switch does on the KDX. It does switch on the lights...it also switches 'on' the regulator.
Let us know what they say?
BTW...my 'scope is a quite old Tektronix 465 (I think) with the channel 2 vertical controls busted off..and parts no longer available. I wouldn't know what to do with a 'scope that TOLD me freq, period, amplitude, and from your pics allows you to segment the part of the waveform you want that information on. Your pics look more like a waveform analyzer than a 'simple' sillyscope to me.
Maybe 'lectrons and 'lectricity haven't changed over the years, but the way you can LOOK at either of 'em sure has.