AC Digital Bridge

Hi,
Can somebody help me please...ergent!

Why the digital ac bridge use for high frequency impedance measurement is difficult to balance and for low frequency is easy to balance it??

 

Bridge circuits are analog in nature, not digital. What sort of bridge do you refer to? Resistive? Capacitive? Inductive?

 

Actually the ac bridge can use to measurement impeadance right. For the low frequency it is easy to balance. For the higher frequency it is difficult to balance it. I want know why at the higher frequency the bridge are difficult to balanc. Please help me. Urgent

 

Here is a link to the material on this site - http://www.allaboutcircuits.com/vol_2/chpt_12/5.html.