AVR-Chat

Ryan wrote:
> Alright, ideally, I could place a diode across the flyback source
> (solenoid)... but in this case I can't.  (The solenoid is connected
> remotely)  I can't figure out how to do this and provide reverse
> polarity protection.  If I place a polarity protection diode on the
> +12 input to the driver circuit, it will block any positive voltages
> I'm trying to "short" to +12.  
>
> Does that make sense?  I'm still a little confused myself.  See
> circuit diagram here:
>
> http://i5.tinypic.com/20hjytt.jpg
>   
What is done sometimes instead of a diode is to put an RC snubber 
network across the solenoid.