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Pat. 11410845 United States, Int. Cl.22 H01J 61/56, G01N 33/00, H02M 3/00, H02M 7/44. Method, apparatus and system for providing voltage supply for photoionization detector lamp : Appl. N 16/881712 : Filed 22.05.2020 : Pub. 09.08.2022 : / Chuang Huang, Tengfei Zhang, Bing Chen, Feng Liang ; Assignee Honeywell International Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11410845/en?oq=US11410845.html (дата обращения: ДД.ММ.ГГГГ).