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IPC Main Group
G01R 29/00

Arrangements for measuring or indicating electric quantities not covered by groups

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES

11 direct subcodes

Child Classifications

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  • G01R 29/04 Measuring form factor, i.e. quotient of root-mean-square value and arithmetic mean of instantaneous value; Measuring peak factor, i.e. quotient of maximum value and root-mean-square value
  • G01R 29/06 Measuring depth of modulation
  • G01R 29/16 Measuring asymmetry of polyphase networks
  • G01R 29/18 Indicating phase sequence; Indicating synchronism
  • G01R 29/2 Measuring number of turns; Measuring transformation ratio or coupling factor of windings
  • G01R 29/22 Measuring piezoelectric properties
  • G01R 29/24 Arrangements for measuring quantities of charge
  • G01R 29/26 Measuring noise figure; Measuring signal-to-noise ratio