[Mobile-Portable] More noise cures

[N1KHB at aol.com]

Randy and all,
   I just plugged in a search phrase of "fuel  injector electrical noise 
radiation" and received enough potentially useful  returns that it appears 
hopeful that some of the authors might have some  experience. I didn't read 
any, but the titles suggest promise.
   And just off the top of my head, I'm  thinking back to my electronics 
experience. One of my solenoid (an  injector is a solenoid, right?) projects 
which radiated unacceptably was tamed  with ceramic bypass caps. Think 
risetime and thus bandwidth reduction here.  And way back in tech school we were 
told that connecting reverse biased diodes  across relay and solenoid coils 
never hurt and usually helped. The coil  resonates when power is removed 
abruptly and the first reverse alternation is  greatly suppressed by the diode 
becoming forward biased in that phase thus  quickly killing the noise burst.
   I don't know if vehicle companies have either, or  any, such 
suppression. Something to investigate I suppose.
 
Best,
Sonny N1KHB