I am starting to get interested in static electricity
I have found this which is very cool but I do not know how I can control the output voltage.
What I need to do is to use a 3 Volts Button Battery and get a 50-500 volt static charge from it. And I need the device to be very small.
What can I change in order to control the voltage? and is a 3 volts button battery good to keep this thing alive for months? and lastly, can I flip the battery to control the out put charge (negative or positive)?