Accurate voltage on Capacitors

[Kuan Zhou]

Hi,

We designed a circuit model that can maintain an accurate analog
voltage on the capacitor through the positive feedback. Whever there is a
current input to the current source, the analog voltage will
increase/descrease correspondingly and this analog voltage can be maintained
for several days with no attenuation. The initial purpose of this circuit is
to emulate the brain working memory. We are wondering now what are the
potential engineering applications for such circuits. Can any guys give us
some suggestions?

Kuan