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nuckolls.bob(at)aeroelect
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 Posted: Wed Jan 10, 2018 10:09 am Post subject: Electronic Ignition spark advance signal boost CORRECTIO |
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At 10:30 AM 1/9/2018, you wrote:
| Quote: | At 07:38 PM 1/8/2018, you wrote:
| Quote: | --> AeroElectric-List message posted by: "Airdog77" <Airdog77(at)gmail.com>
Bob,
I missed this post earlier and noted your comment Re. this corrected diagram in the other thread.
I'm hoping 4-5" from the case is close enough to tie into the ground wire for pin 1 input? As I mention in the other thread, for some reason the ground wire on this unit is massive, around 12-14AWG. |
Exactly what parameter is being conditioned by
the AD626? |
My apologies, I got your particular task
stirred in with another conversation on use
of the AD626. I recall that you're simply
wanting to put a small gain on the advance
signal from the Electroair ignition system.
I downloaded the Electroair experimental
installation manual which is very UNCLEAR
as to what all the ground connections are
. . . and what kind of current flows in each wire.
Given the dearth of clarity, here's my best
recommendation. Use Pin 14 of J1 as the
(-) input measurement point. And, of course,
you already know that Pin 21 is the (+)
input.
[img]cid:.0[/img]
Sorry for what must have appeared to be
a rather obtuse posting . . . didn't realize
the struggle with poor data.
Bob . . .
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Airdog77
Joined: 24 Nov 2013
Posts: 80
Location: Northern Virginia
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| Posted: Thu Jan 11, 2018 12:02 am Post subject: Re: Electronic Ignition spark advance signal boost CORRE |
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Bob,
I should have been a bit clearer myself on the ground wire off that unit since --you're gonna love this-- it's not on the diagram!
Yes, there is actually a separate ground wire that is not depicted on that diagram, and again, for some reason it's quite robust (~12-14AWG). So I measured the distance from the case that I tied into that big ground wire with my 22AWG lead for the AD626 (-) input at 4.5 inches.
Sorry for the confusion and thanks for the help!
Wade
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_________________
Airdog
Wade Parton
Building Long-EZ N916WP
www.longezpush.com |
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