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Pat. 9906134 United States, Int. Cl.22 H02M 3/158, G05D 9/12, H02H 1/00, H02J 3/38, H02J 9/06, H02M 1/42, H02M 7/40. Insulation detecting circuit, power converting device and insulation impedance value detecting method : Appl. N 15/628631 : Filed 20.06.2017 : Pub. 27.02.2018 : / Tsung-Han Tsai, Po-Jen Hou, Xin-Hung Lin ; Assignee Delta Electronics Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9906134/en?oq=US9906134.html (дата обращения: ДД.ММ.ГГГГ).