1. PROF : RAHUL CHANDEGARA
AC Bridges
PRESENTED BY:
HITIKXA NAKUM ( )
HITESH NANDORIYA ( )
PALAK ODEDRA ( )
NIRAJ MAHETA ( )
GUIDED BY:
PROF : RAHUL CHANDEGARA

2. 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 :

3. 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 :

4. Unbalance Conditions

5. 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

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

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

8. Universal Impedance Bridge

9. Bridge configurations of the universal impedance bridge