Isolated observation of high voltage signals from DC to 500 MHz using an optical fiber cable [News from Japan]

It is often required in many fields to observe high-voltage signals with various frequencies in order to carry out research and development (R and D). This is especially true of R and D in power electronics. It is very important for researchers to be able to observe highvoltage signals safely, because such signals may cause destruction of equipment and serious injury to personnel. For safe observation of high-voltage signals, it is necessary to completely disconnect the electrical input and output of the system.