Originally posted by e4chris
it must be a dangerous hobby making a supercapacitor ..... might lightning bolt next doors cat or something ... i worked in a camera store ages ago and got a shock of one used for a flash and it sent me flying!
Flash camera's have evolved past the need for those 300 volt power supplies, now the flash is done by LED's running a few volts. No shocks from those dudes. Anyway, supercapacitors are only capable of holding a couple of volts, they break down with anything higher so there is not much chance of shock. You might ruin a knife though if you short out the contacts with a small knife, a very large current surge will go through the knife and maybe melt part of it. Kind of like putting it across a 12 volt car battery.
The thing about super caps that make it useful is the ability to charge and discharge a LOT faster than batteries. So if you have super caps and batteries together in a car, for instance, you can have the super cap charged up to give your car a power boost on acceleration or going up a hill and that charge will be used up pretty fast so it is a short term thing but it works well inside those parameters.