One is laid bare by [WizardTim], as he cross-sections a 20KV high ... low-voltage silicon diode has a forward voltage drop of about 0.7V and a relatively low maximum reverse voltage, for example ...

Those who work in different spaces may have different definitions of the term “high voltage”. For someone working on the GPIO pins of a Raspberry Pi it might be as little as 5 volts ...

Figure 1: Illustration of electric potential contours around a high voltage transmission line ... 2 is an equivalent per-phase circuit of the example shown in Fig. 1. The system can be represented by ...