[Diy_efi] peak-and-hold injector driver ic's

[Bevan Weiss]

(reply follows)
> >Does anyone know of any other peak and hold injector driver IC's than the
> >standard
> >LM1949(National), L584(ST) and DRV103(TI)
> >
> >The CS452/453's are no longer in production, and so are very hard to get
> >ahold of.
> >I've thought about making up a discrete circuit for the same effect, ie
high
> >current turn on, switch to low current hold after some time t.  It'd just
> >take up a little more room, and cost a little more in added component
cost.
> >Any ideas??
> >
> >Thanks,
> >Bevan
>
> Bevan--
>
> Something FAR superior to the standard P&H drivers can be done.
>
> As I've said here before, look up the design for the hammer throw circuits
> for the final generation of mechanical, high speed teletype printers ! The
> electro-mechanical problem is a dead analog to the problem of moving an
> injector pintle, and the teletype circuits got a great deal more
> sophisticated about doing the job _very_ quickly than any injector driver
> ever has.
>
> Using this type of circuit (made from discreet components) to drive
> injectors, while it would take up a good deal more board real estate,
would
> also open up a whole new world of injector performance and dynamic range.
>
> Greg

That does sound very interesting, however I'd still like to keep things
simple, it's just spraying fuel, not really life or death stuff.  I can't
really think of many other ways of doing it other than using a p&h type
setup or sat.  Maybe a charged capacitor dump into the injector at open...
Other than that, any keywords you could give me for a google search would be
appreciated.  Trying to find stuff on teletype circuits is not an easy feat
unless you know exactly what it's commonly called :)

Thanks for the direction,
Bevan

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