>> >  Why not use a 7805/TO220 in the automotive 
>> > environment? All you need to
>> >  do is install the
>> >  recommended caps, but also install a TVS or varistor 
>> > on the input to
>> >  protect from ESD spiking.
>> >  The LM7805 is very forgiving, and not as cranky as the 
>> > LM2940. I use 'em
>> >  all over the place.

The LM293x family are intended for automotive use. I'm not 
sure whether or not ou would consider them "cranky" in the 
same manner as the LM2940 but the experience of a friend who 
specialises in in-vehicle computer telemetry and metering 
systems is that they work very well.



            Russell



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