Here are PCBs and photos of all currently considered solutions for O-ESD excitation.
PCB for the circuit based on resonant energy transfer is in the folder 1-Resonant.
PCBs for two excitations based on audio amplifiers are in the folder 2-Audio.
Photo of ESD that uses flyback configuration as excitation, with trafo, cascade, microcontroller,
and external power supply, that is currently being tested is in the folder 3-Flyback.
Photo of ESD that uses push-pull configuration for excitation, with trafo, cascade, microcontroller
and external power supply, that is currently being tested is in the folder 4-Push-pull.
PCB for single cascade that is currently used and tested is in the folder Cascade_single.
PCB for double cascade that is currently used and tested is in the folder Cascade_double.
Photos of multiple commercial and designed/prototyped trafos are in the folder Trafos.