[Diy_efi] F/V for logging a tach signal

Wed Aug 7 10:53:19 GMT 2002

Steve,

Go to the national semiconductor site and look up the LM2917 frequency to
voltage converter. Download the datasheet which has circuits to suit your
exact application.

Rgds,

Don

----- Original Message -----
From: "Steve Hutson" <acomp at websurf.net>
To: <diy_efi at diy-efi.org>
Sent: 7 August 2002 5:09
Subject: [Diy_efi] F/V for logging a tach signal

> Does anyone know how to convert a kettering? (- coil) signal to a variable
> voltage? I would like to use this to log RPM with a DataQ 194. I'm
currently
> using 2 logging devices (ECU-RPM, TPS), and DataQ-WB02) and their time
lines
> to sync the two. I have to convert everything to Excel and overlay it.
> DataQ. It would REALLY simplify matters if I could connect all three to
the
> DataQ and get rid of everything else. Any help will be appreciated.
>
> Here is a link I found... but I have NO idea how to design a circuit that
> would support this device. It seems like it might be fairly easy, but
> ignorance IS bliss.
> http://www.analog.com/productSelection/pdf/AD650_c.pdf
>
> Happy, happy, happy :o)
> Steve
>
>
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