There's also a third problem, which is that capacitors typically don't have constant voltage. Unless there's something special about these capacitors that they're not mentioning in the articles.
Nor do batteries (although batteries are far flatter than capacitors).
That problem of "sagging voltage" is solved with either a buck-boost converter, or a buck-boost inverting converter... or a SEPIC converter. Good ones get ~95% efficiency or so.
Comments
There's also a third problem, which is that capacitors typically don't have constant voltage. Unless there's something special about these capacitors that they're not mentioning in the articles.
Nor do batteries (although batteries are far flatter than capacitors).
That problem of "sagging voltage" is solved with either a buck-boost converter, or a buck-boost inverting converter... or a SEPIC converter. Good ones get ~95% efficiency or so.