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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 bridge is limited to the measurement of medium- Q coils (1< Q <10). Hay Bridge.

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pertemauan 10 11

PERTEMAUAN 10 – 11

AC Bridges dan APLIKASINYA

maxwell bridge
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<Q<10).
hay bridge
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 :
schering bridge
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 :
slide6
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
wien bridge
Wien Bridge
  • Applications :
    • Frequency measureent
    • Notch filter
    • Frequency-determining element
  • Frequency measurement with the Wien bridge -----------------------
wagner ground connection
Wagner Ground Connection
  • The wagner ground connection eliminates the effect of stray capacitances across the detector
universal impedance bridge
Universal Impedance Bridge
  • Universal impedance bridge