DIFF Subgroup
G01R 17/10 AC or DC measuring bridges
Introduced: September 1968
Full Title
Measuring arrangements involving comparison with a reference value, e.g. bridge > AC or DC measuring bridges
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G01R 17/12 using comparison of currents, e.g. bridges with differential current output IPC+CPC Available in IPC and CPC
- G01R 17/14 with indication of measured value by calibrated null indicator, e.g. percent bridge, tolerance bridge (G01R17/12, G01R17/16 take precedence) IPC+CPC Available in IPC and CPC
- G01R 17/16 with discharge tubes or semiconductor devices in one or more arms of the bridge, e.g. voltmeter using a difference amplifier IPC+CPC Available in IPC and CPC