DIFF Subgroup
G01R 19/18 using conversion of DC into AC, e.g. with choppers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof > using conversion of DC into AC, e.g. with choppers
CPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) > using conversion of DC into AC, e.g. with choppers
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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