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

[Bevan Weiss]

Yep, to run it PWM you require an additional two resistors.  It's just not a
tidy device like I'm looking for.
Something like the CS453 would have been ideal, but for some strange reason
they aren't selling them anymore.

----- Original Message -----
From: "Jean Bélanger" <jean_belanger at sympatico.ca>
To: "'List for general do-it-yourself EFI talk'" <diy_efi at diy-efi.org>
Sent: Monday, March 10, 2003 5:36 PM
Subject: RE: [Diy_efi] peak-and-hold injector driver ic's


> Looking at the datasheet, it seems as if it can be run as a PWM hold
> current. But I'm more familiar with software than electrical components
> :)
>
> Jean
>
>
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
> On Behalf Of Bevan Weiss
> Sent: March 9, 2003 11:22 PM
> To: List for general do-it-yourself EFI talk
> Subject: Re: [Diy_efi] peak-and-hold injector driver ic's
>
> It's not a pulse width modulated hold current :(
> This means that power is wasted in the transistor used to control the
> current flow.
> That makes it an analog device and I just don't like them :P
>
> I think it's also important to remember that every watt of power usage
> by
> the electrical components of the car draws about 2 watts from the engine
> (assuming 50% efficiency in power delivery from alternator).  It's
> peanuts
> to kiloWatts, but it's still a power loss.
>
>
>
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