| The main characteristics of the 
                supply: | 
              
              
                | - the supply keeps the arc 
                within the range of extreme glow in the modes of operation with 
                either voltage or current or power control | 
              
              
                | - fast arc sensing and protection, 
                if the plasma tilts into arc discharge | 
              
              
                | - after tilt over and prohibition, 
                fast setting back to the original operation point | 
              
              
                | - asymmetrical pulse mode of 
                operation | 
              
              
                | - ignition pulse for the ignition 
                of the plasma | 
              
              
                |   | 
              
              
                | Parts of the supply: | 
              
              
                | - input three-phase rectifier 
                without control | 
              
              
                | - intermediate inverter with 
                a frequency of 100kHz | 
              
              
                | - high voltage output rectifier | 
              
              
                | - a unit generating ignition 
                pulse and asymmetrical pulse | 
              
              
                | - microprocessor controller | 
              
              
                | - remote control through RS485 
                series line | 
              
              
                |   |