Oscilloscopes for power electronic circuits

The introduction of the DSO (Digital Storage Oscilloscope) in the early 70´s adding the dimension of storage. A DSO can capture a single event and store it in memory for subsequent visual computed evaluation. With this additional dimension and with the advancement of technology, high performance is now being achieved for both repetitive and one off transients. Typical examples of waveform types are given. The quoted bandwidth of an oscilloscope is the measure of its performance with respect to an analogue input signal frequency. Currently oscilloscopes are available with bandwidths between 20 and 500 MHz. (Bandwidth is the -3dB point)