How can I easily charge a 450V capacitor with a small battery such as a 1.5V or 9V while stepping the voltage up in between so as to provide a voltage near 450V for the capacitor?
I'm looking to charge this capacitor with either pieces I buy or those I build, but I want the materials not including the capacitor and battery to cost me under $20, preferably under $10. If necessary I can take parts out of other devices, but it would be most preferable just to buy them pre-built.
I've looked up what would be necessary and it looks like I'd need a step up inverter from the small DC voltage (probably around 12V) to the large AC voltage(probably around 220V) then I'd need a 2:1 step up transformer to turn the 220V into around 440V and then I'd need another inverter to turn the 440V AC current into a 440V DC current. I might also need 2 of all of these pieces if I needed to down step the Voltage to finish the circuit, but there might be a way around that. In addition to cases for the battery or batteries. The wiring for all this will be bought separately in addition to a switch if that was a question.