Hi. I'm looking for a product or schematic of an electric fence circuit or similar deterrent with a common ground.
Purpose: I'm sometimes in bear country and in some places like Whitney Portal a tiny population of 22 bears cause literally hundreds of thousands of dollars in damage a year. The official regulation of scrubbing a vehicle of all food, cosmetics, etc. is impractical and often doesn't work. I have a 12v solar setup that can indefinitely power something with a reasonable draw and the vehicle has metal fenders all around. The idea is to steak in a ground and electrify the chassis. The problem is the chassis is also the 12v ground. I did obtain and take apart an old commercial 12v electric fence module (with a broken case so it didn't cost much) but there was no common ground (battery is isolated). To use this I would have to somehow provide an isolated 12v source. I considered using an inverter and transformer but there might be feedback to the inverter which could fry it which is a fire hazard.
Any suggestions?
Edit: I probably threw out that commercial circuit because it didn't fit my needs.
Purpose: I'm sometimes in bear country and in some places like Whitney Portal a tiny population of 22 bears cause literally hundreds of thousands of dollars in damage a year. The official regulation of scrubbing a vehicle of all food, cosmetics, etc. is impractical and often doesn't work. I have a 12v solar setup that can indefinitely power something with a reasonable draw and the vehicle has metal fenders all around. The idea is to steak in a ground and electrify the chassis. The problem is the chassis is also the 12v ground. I did obtain and take apart an old commercial 12v electric fence module (with a broken case so it didn't cost much) but there was no common ground (battery is isolated). To use this I would have to somehow provide an isolated 12v source. I considered using an inverter and transformer but there might be feedback to the inverter which could fry it which is a fire hazard.
Any suggestions?
Edit: I probably threw out that commercial circuit because it didn't fit my needs.