Fig. 38
Schemes of input signal for impedance measurements under voltage control (a) and current control (b) for an unstable system. The output signal is also reported for measurements performed under current control on unstable system (c) (Reprinted from Prog Org Coatings, 69, Paussa L, Andreatta F, Aldighieri P, Fedrizzi L, Critical aspects in the electrochemical study of unstable coated metallic substrates, 225–234, Copyright (2010a), with permission from Elsevier)