Hi, I'm trying to build a capacitor charger that can charge a capacitor to a higher voltage than the battery voltage I have. When reading up on charging capacitors, the simplest method seems to be wiring something similar to the capacitor charger for a camera flash. Unfortunately, a camera flash will charge a capacitor to a much higher voltage than I am looking for. Anyway, the capacitor charger doesn't need to be based on a camera flash, it's just an example. Here's what I'm looking to do: The goal of the capacitor charger is to charge a 10000uf 50v capacitor to 18-25 volts as quickly as possible and with a fairly compact setup of components. The capacitor is then going to be discharged manually through 4 short pieces of kanthal resistance wire, heating them incredibly fast in a tiny fraction of a second. I'm planning to make an initial test by using one piece of kanthal wire, a 2000uf capacitor, and several 9 volt alkaline batteries first (18v at 1amp draw using 4 batteries, two series pairs wired in parallel), to make sure that the measurements I calculated are correct. The best means to use this in a compact space is to use a LiMn battery. These are made to be used for "sub ohm" electronic cigarettes, and can provide 20 amps of current continuously, and 35 amps in short bursts (I am planning to only draw 20 amps at a time, so as not to drain the battery(s) as quickly). LiMn batteries provide 4.2 v when fully charged, and 3.6 v through most of their charge. They should not be used in series, hence why I need a means to bring the voltage up (also to save battery space since I will need only 1 or 2 at most). I recognize this is a lot of current, however I believe that by keeping well below 50 volts, human skin resistance should keep me from any fatal accidents. By multiplying the battery's voltage by 5 or 6 times I should have the correct voltage required to charge the capacitor for my needs, as well as keep well below its safe working voltage. The thing that's hardest for me to understand is transformers, what their properties are, and how to modify their properties to change the behavior of a circuit.