BRIDGES

Wheatstone Bridge

• measures resistance
• predominantly resistive

Kelvin Bridge

• a seven arm bridge used to compare the four resistances of two four terminal networks
• also called a double bridge
• Thompson Bridge

Carey -Foster Bridge

• a type of Wheatsone bridge measures the difference between nearly equal resistances
• coils connected by a slide wire acts as two arms

Wien Bridge

• a four branch bridge
• can measure capacitance or inductance in terms of resistance and frequency
• used as a notch filter

Maxwell Bridge

• a four arm bridge
• measures inductance (or capacitance) in terms of  resistance and capacitance (or inductance)
• bridge balance is independent of frequency
• used for measuring inductance of medium Q coils 

Hay Bridge

• a four arm bridge
• for measuring inductance in terms of capacitance, resistance and frequency
• bridge balance is dependent on frequency
• used to measure high Q inductors

Owen Bridge

• a four arm AC bridge
• measures self inductance in terms of capacitance and resistance
• bridge balance is independent of frequency

Anderson Bridge

• a 6 arm bridge
• used to measure self inductance in terms capacitance and resistance
• a modification of Maxwell-Wien Bridge
• bridge balance is independent of frequency

Campbell Bridge

• a bridge specifically designed for comparison of mutual inductances

Schering Bridge

• a four arm bridge
• measures capacitance and dissipation factor
• bridge balance is independent of frequency

Campbell-Colpitts bridge

• an AC bridge that measures capacitance by the substitution method

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