What exactly is a Dead Zone Circuit?

[tqtatl]

hi am doing a paper about deadzone circuit, and i dont really understand what it is about. The circuit is in the attachment. I just need to know why is this circuit called "Dead Zone Circuit"

 

[hardings]

Dead Zone Circuit

Something wrong in the circuit.
I guess the deadzone means some diodes are not forwarded.

 

[A.Anand Srinivasan]

Re: Dead Zone Circuit

a deadzone is where a system does not respond to a input.....


the circuit is a deadzone circuit because if you can see the diode are on and hence the bridge given is a wheatstone bridge and hence the voltage across the resistor R2 is zero and hence the output always depends on V+ and V- and not on the input Vi.....