Microcomputer-based power-semiconductor-circuit waveform analyser

The paper describes a signal-processing system developed for the analysis of power-semiconductor waveforms. The system combines the acqusition versatility of a digital tiansient recorder with the computational capabilities of the microcomputer. Waveforms may be displayed, stored or processed, and various processing options are described in the paper. Problems arising from point-by-point calculations are discussed and examples of waveform analysis using thyristor and transistor chopper circuits are presented.