These devices were deleted,
lightning contained in a self-heating thermal flask maintained at \(80^oC\). And
a container fill with chlorophyll from meshed up green leafy vegetables. A metallic conductor draw charges from the slurry.
Both devices are single ended current source (\(p^+\) or \(e^{-}\)). A switching capacitor may draw charges from the current source and provides a stable output voltage across given a load.
Good night.