A method for detecting leaks, comprising: providing an inspection electrode and a detection electrode , wherein the inspection electrode and the detection electrode are positioned such that a package fits between the detection electrode and the inspection electrode ; and using an AC voltage with a DC high voltage offset to inspect the package , characterized in that the method further comprising the steps of electrically connecting said inspection electrode to a high voltage rectifier , wherein the high voltage rectifier is electrically connected to a pulse autotransformer or a pulse transformer to create the AC voltage with the DC high voltage offset; electrically connecting a first DC voltage power supply to the pulse autotransformer or the pulse transformer , wherein the pulse autotransformer or the pulse transformer is electrically connected to a high voltage control board , wherein the high voltage control board is configured to switch a current flow from the first DC voltage power supply through the pulse autotransformer or the pulse transformer on and off, in order to generate AC high voltage at outputs of the pulse autotransformer or the pulse transformer ; electrically connecting a second DC voltage power supply to the high voltage control board , a detection board , a programmable logic controller , and a display , wherein the second DC voltage power supply is configured to supply power to the high voltage control board , the detection board , the programmable logic controller , and the display ; electrically connecting said detection electrode to the detection board , wherein the detection board is electrically connected to the programmable logic controller , and the programmable logic controller is electrically connected to the display ; and applying the AC voltage with the DC high voltage offset through the inspection electrode to the package . providing an inspection electrode and a detection electrode , wherein the inspection electrode and the detection electrode are positioned such that a package fits between the detection electrode and the inspection electrode ; and using an AC voltage with a DC high voltage offset to inspect the package , characterized in that the method further comprising the steps of electrically connecting said inspection electrode to a high voltage rectifier , wherein the high voltage rectifier is electrically connected to a pulse autotransformer or a pulse transformer to create the AC voltage with the DC high voltage offset; electrically connecting a first DC voltage power supply to the pulse autotransformer or the pulse transformer , wherein the pulse autotransformer or the pulse transformer is electrically connected to a high voltage control board , wherein the high voltage control board is configured to switch a current flow from the first DC voltage power supply through the pulse autotransformer or the pulse transformer on and off, in order to generate AC high voltage at outputs of the pulse autotransformer or the pulse transformer ; electrically connecting a second DC voltage power supply to the high voltage control board , a detection board , a programmable logic controller , and a display , wherein the second DC voltage power supply is configured to supply power to the high voltage control board , the detection board , the programmable logic controller , and the display ; electrically connecting said detection electrode to the detection board , wherein the detection board is electrically connected to the programmable logic controller , and the programmable logic controller is electrically connected to the display ; and applying the AC voltage with the DC high voltage offset through the inspection electrode to the package . <EOS>