Injectors and resistors (and i'm back)

Tue Nov 24 14:50:45 GMT 1998

> > What about EMI when you shut off the inductive load... use the body diode of
> > the FET to catch the spike?... if so what voltage?  How about an RC snubber
> > across the injector... or is EMI not a problem (maybe inductance is low?)
> 
> Check out the schematics for using the Nat'l Semi LM1949 Inj Driver
> Cntrlr. It's a PDF file available from www.nsc.com. It uses a 50V zener,
> AIR..this for driving the std 4-1 peak and hold injector..ala GM TBI.

They say you're losing your mind when you reply to yourself, but
just to be clear...the spike is clipped by a 33v 5watt zener per
LM1949 datasheet.                            **

-greg