Option with such a high voltage is a little bit to drastic ..
Try PIR infrared detector and water sprinkler .. Here is an example: https://www.pestcontrol-products.com/repel.htm
Regards,
IanP
Cats like to sit on warm objects. Try spraying cold water on your car. Perhaps a grumpy dog near by would help. Take advantage of the cat being territorial and marking out their territory by urinating in it. Invite the neighbors to walk their dog near your car. The cats will smell the odor and stay away. Your family may have the same reaction.
thanks to all. I want to make them go not fry them.
About the dog, it is a hopeless idea. these cats jumped on my dog once. About the ultrasonic is that true? what frequency? cause the circuit by Spirit is a bit large.
Waiting other good suggestions and thanks again
Human hearing range is about 20Hz to 20Khz and the cats heare sounds form the range of 45Hz to 64Khz so a circut that emits sounds above 30KHz would be good but the risks are that thesse ultrasounds even if they can not be heard they have a certain effect on humans to. So if you are willing to take the risks try this and be sure that at 60Khz no cat or dog will aproch your car.
yes I know about the hearing range. My concern is will the ultrasound be annoying or make them feel they have a radio in their garden?
Have someone tried it?
thx again