1. AC Bridges dan APLIKASINYA
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<Q<10).

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

10. Bridge configurations of the universal impedance bridge