Hello everybody! You can find the THOR power supply schematics at http://www.saunalahti.fi/dncmrc/thor_schem.htm. They are all well printable PDF files, 30 - 50 kB each (not big). All components values and names are listed. Comments, suggestions and questions are welcome! Even much more welcome are suggestions about how to stop HV spikes from reaching the drivers' circuitry. Regards