AC or DC measuring bridges

Full Title

Measuring arrangements involving comparison with a reference value, e.g. bridge > AC or DC measuring bridges

Child Classifications

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• G01R 17/105
• G01R 17/12 using comparison of currents, e.g. bridges with differential current output
• G01R 17/14 with indication of measured value by calibrated null indicator, e.g. percent bridge, tolerance bridge (G01R17/12, G01R17/16 take precedence)
• G01R 17/16 with discharge tubes or semiconductor devices in one or more arms of the bridge, e.g. voltmeter using a difference amplifier
• G01R 17/18 with more than four branches