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PERTEMAUAN 10 – 11 AC Bridges dan APLIKASINYA. Maxwell Bridge The Maxwell bridge measures an unknown inductance in terms of a known capacitance. The maxwell.

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Presentation on theme: "PERTEMAUAN 10 – 11 AC Bridges dan APLIKASINYA. Maxwell Bridge The Maxwell bridge measures an unknown inductance in terms of a known capacitance. The maxwell."— Presentation transcript:

1 PERTEMAUAN 10 – 11 AC Bridges dan APLIKASINYA

2 Maxwell Bridge The Maxwell bridge measures an unknown inductance in terms of a known capacitance. The maxwell bridge is limited to the measurement of medium-Q coils (1

3 Hay Bridge The Hay circuit is more convenient for measuring high-Q coils Hay bridge for inductance measurements  Impedance triangles illustrate inductive and capacitive phase angles  for Q>10 :

4 Schering Bridge The Schering bridge, one of the most important bridges, is used extensively for the measurement of capacitors. Schering bridge for measurement of capacitance  Dissipation factor :

5 Unbalance Conditions

6 Bridge balancing problem : –(a) unbalanced condition –(b) bridge balance is restored by adding a resistor to arm 1 (maxwell configuration) –(c) Alternative method of restoring bridge balance, by adding a capacitor to arm 3

7 Wien Bridge Applications : –Frequency measureent –Notch filter –Frequency-determining element Frequency measurement with the Wien bridge 

8 Wagner Ground Connection The wagner ground connection eliminates the effect of stray capacitances across the detector

9 Universal Impedance Bridge Universal impedance bridge

10 Bridge configurations of the universal impedance bridge


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