I am using an USB port as a power supply. Is there a way I can take the weak 5V of a regular laptop USB and transform if to 100V+ while begin in the smallest package possible. I've heard of boost converters but they are usualy too big. I want something that has the size of like a normal USB key.
What I want to do is to charge up around 5 capacitors at 100+V and then discharge them later. Power efficiency not a concern for me.
It would be helpful to include a schematic of the circuit.