This simple circuit model works for any voltage regulator with dominant-pole feedback, meaning that the regulator does not use a multipole phase-compensating feedback structure.

Mathematical model of simple circuit in chicken brain raises fundamental questions about neural circuitry Date: December 8, 2009 Source: Washington University in St. Louis Summary: Neural ...

It’s a pretty clever system with very simple and flexible circuitry. [0033mer] says he’s used this over twisted-pair wires a couple of hundred feet long, which is pretty impressive.