Two channel high voltage differential probe for power electronics applications

In this article, a high voltage two channel differential probe has been developed and tested in order to satisfy the requirements of power electronic measurements. The bandwidth of at least 10MHz is verified using a 50MHz sine wave generator. Voltage edges at 5V/ns like in real converters generated from a DC chopper are also applied and the probe is perfectly able to follow such signals. The probe is tested by using high voltage source up to 8kV DC and no coronas and flashovers were observed between the PCB layout and the components and between the components as well.