| ??? 03/01/11 10:52 Read: times  | 
#181367 - A vote for your plan Responding to: ???'s previous message  | 
Although the suggested alternatives have their merits, I would go with your crowbar and polyswitch, with a transzorb to handle the spikes that can get past a crowbar. By adding a diode across the crowbar you can also get reverse polarity protection.  | 



