A.C.Bridges

Alternating current bridges….it’s applications and various perspectives revealed…..
ALTERNATING CURRENT BRIDGES:-
INTRODUCTION:-
A bridge circuit is a type of electrical circuit in which two circuit branches (usually in parallel with each other) are "bridged" by a third branch connected between the first two branches at some intermediate point along them. The bridge was originally developed for laboratory measurement purposes and one of the intermediate bridging points is often adjustable when so used. Bridge circuits now find many applications, both linear and non-linear, including in instrumentation, filtering and power conversion.
• AC Bridges, as the name suggests are alternating current bridges operates in alternating current supply.
• It is used to measure:-
• resistance
• Inductance
• Capacitance
• Frequency

ACKNOWLEDGEMENT:-
• The main objective of this presentation is to obtain first-hand knowledge on how AC BRIDGES works and how it can be applied to the main work field and also to prove its main impact in the field of Engineering and Technology.

• It is my heartiest gratitude to respected MR.A.K.GHOSHAL, my faculty and guide through-out this project work for his professional guidance, advice, motivation, endurance and encouragements during his supervision period. The present work would have never been possible without his vital supports and valuable assistance.

• Needless to mention that he has rendered his whole -hearted support and help to make this project a success.
• It is only because of him and my all-out effort that we could draw up to this extent in such a field of excellence in the present days of Science and Technology.

CONTENTS:
 Acknowledgement
 Introduction
 What is A.C Bridge??
 Generalized bridge BALANCE EQUATION
MAXWELL INDUCTANCE BRIDGE
MAXWELL INDUCTANCE CAPACITANCE BRIDGE
HAY’S BRIDGE
ANDERSON’S BRIDGE
OWEN’S BRIDGE
DESAUTY’S BRIDGE
MODIFIED DESAUTY’S BRIDGE
SCHERING BRIDGE
HIGH