Abstract: Disclosed are systems, devices, apparatus, circuits, methods, and other implementations, including a system that includes one or more power switching devices that receive power delivered by a power unit, and a high-speed charge control circuit electrically coupled to the one or more power switching devices. The high-speed charge control circuit includes an optocoupler coupled to the power unit and further coupled to a first switching device of the high-speed charge control circuit, the first switching device actuated based on output of the optocoupler to establish an electrical path to discharge at least a portion of electrical charge present at least on the one or more power switching devices when power delivery from the power unit is stopped.

Abstract: A solid state switch may include a plurality of inputs, such as to receive a control signal to cause the solid state relay to selectively deliver power from an AC power source to an electrical load (e.g., a heater, a pump, a lighting source, a motor, etc.). The solid state switch may include at metal-oxide-semiconductor field-effect transistors (MOSFETs) connected in a series opposition arrangement, where a gate of each of the MOSFETs may be electrically connected to a corresponding one of the plurality of inputs. A signal output from the MOSFETs may provide a triggering signal at a gate input of each of a corresponding semiconductor switching device to close the solid state relay to enable power delivery from the AC power source to the electrical load.

Abstract: Disclosed are systems, devices, apparatus, circuits, methods, and other implementations, including a system that includes one or more power switching devices that receive power delivered by a power unit, and a high-speed charge control circuit electrically coupled to the one or more power switching devices. The high-speed charge control circuit includes an optocoupler coupled to the power unit and further coupled to a first switching device of the high-speed charge control circuit, the first switching device actuated based on output of the optocoupler to establish an electrical path to discharge at least a portion of electrical charge present at least on the one or more power switching devices when power delivery from the power unit is stopped.