pun4dDownload scientific diagram | Schematics of PUND method with a) continuous waveform and b) corresponding I-t curve. Schematics of c) pulse-and d) continuous-type triangular waveformsPUND measured values are hhly dependent on the pulse width (ms) up to the point that the pulse width exceeds 10 RC, where R is the output impedance of the tester (normally 1680 W)