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

[David Hunt]

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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