Hi i am new to the list and i have a cpl of ??'s

[Brett Downs]

that is true. wow sounds like you guys have quite an extensive background in
the field of eletrical engineering = )


----- Original Message -----
From: "David Hunt" <bamainc at home.com>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, July 31, 2001 4:19 PM
Subject: Re: Hi i am new to the list and i have a cpl of ??'s


> The frequency is constant, it is the duration that varies.  A frequency to
> voltage converter won't do the job.  The function is like a dwell meter.
> The frequency to voltage converter is like a tachometer.
> dh
> ----- Original Message -----
> From: "Joseph Obernberger" <joelori at earthlink.net>
> To: <diy_efi at diy-efi.org>
> Sent: Tuesday, July 31, 2001 6:00 AM
> Subject: Re: Hi i am new to the list and i have a cpl of ??'s
>
>
> > You might be able to do this with a frequency to voltage converter chip.
> Even
> > might be able to get one for free from national semiconductor's webpage
as
> a
> > sample.  That would convert the injector signal into a linear voltage
> signal -
> > then one could use a normal voltmeter/panel meter (simple voltmeter with
> > display) to watch the duty cycle.  I've never tried this.
> >
> >                                                             joeo
> >
> >
> > Brett Downs wrote:
> >
> > > I have an EFI toyota supra 87 model and i was wondering how could i
> measure
> > > the injector duty and make my own little gauge for it??
> > >
> > > And about how many people are on this list??
> > >
> > > Brett Downs
> > >
> >
>
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