Circuit parameters internal impedance

Figure 2. Equivalent circuit of a bacteriorhodopsin membrane that includes the circuit parameters of the inert supporting structure and the access impedance of the measuring system. Re is the access impedance, which includes the input impedance of the measuring device, the electrode impedance, and the electrolyte impedance between the membrane and the electrodes. Rm and Cm are the resistance and the capacitance of the membrane, C p is the chemical capacitance, Rp is the internal resistance of the photoelectric voltage source, Ep(U, which is a function of the illuminating light power, and Rs is the transmembrane resistance encountered by the dc photocurrent. (Reproduced from reference 19.

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