device will turn off, and the GTO will fail, often explosively, due to the high voltage and current focus on a small portion of the device. Substantial snubber circuits are added around the device to limit the rise of voltage at turn off. Resetting the snubber circuit usually places a minimum on-time requirement on GTO-based circuits.

The minimum on- and off-time is handled in DC motor chopper circuits by using a variable switching frequency at the lowest and highest duty cycle. This is observable in