Stamp EFI

[garfield at pilgrimhouse.com]

On Fri, 26 Jun 1998 23:21:45 -0400, "Bruce Plecan" <nacelp at bright.net>
wrote:

>On the topic of drivers the 1949 is getting rare, but there are two
>relatively new numbers I got from Gar.
>
>Cheery Semiconductors
>CS 453     4.4/1.1   P+H
>CS 452     2.4/0.6   P+H
>First TBI, later TPI

Well, they actually aren't all that new, but they seem to have been
"given up on" because several guys reported having a hard time finding
them. They are SWELL lil devices and ARE quite available, but the Cherry
web pages are less than helpful. At one time, when it was recently
updated, they completely LOST all the links to the automotive devices. I
had to CALL the Cherry automotive semi. dept. to alert them to this.
That was over a month ago, and they STILL haven't fixed the pages to
include the automotive stuff. Sheesh.

Anyhoo, their distribution is through Sager Electronics (www.sager.com),
who has plentiful stock on both parts (although the 453 is really only
needed for MONSTER TBI injectors; the 452 drives standard Bosch low
impedance injectors just fine. Those are the kind on our aviation
testbed KISS EFI system, which uses the Cherry drivers. Only one
comment, the Cherry datasheet recommends using an ordinary zener for
inductive kickback protection; I'd use a transorb instead. Injector
solenoids kick like a mutha; use the best protection device you can get.
It'll only cost you a buck diff., and well worth it IMO.

Garfield