Measurement of frequency by wein''s bridge, Electrical Engineering

Q. Explain the measurement of frequency in detail by using Wein's bridge.

Sol. The Wein's bridge is presented here not only for its use as an AC bridge to measure frequency but also for its application in various other useful circuits.

We find, for example a Wein's bridge in the harmonic distortion analyzer, where it is used as a notch filter, discriminating against one specific frequency.

The Wein's bridge has a series of RC combination in the adjoining arm.

It most Wein's bridge circuits, the components are chosen such that. This reduces equation for the frequency of the bridge. In a practical bridge, capacitors C1 and C3 are fixed capacitors and resistors R1 and R3 are variable resistors controlled by a common shaft. Provided now that the bridge may be used as a frequency determining devices, balanced by a single control. This control may be calibrated directly in terms of frequency.

] Because of its frequency sensitivity, the Wein's bridge may be difficult to balance (unless the waveform of the applied voltage is purely sinusoidal), since the bridge is not balanced for any harmonics present in the applied voltage, these harmonics will sometimes produce an output voltage masking the true balance point.

 

 

Posted Date: 7/12/2012 6:10:26 AM | Location : United States







Related Discussions:- Measurement of frequency by wein''s bridge, Assignment Help, Ask Question on Measurement of frequency by wein''s bridge, Get Answer, Expert's Help, Measurement of frequency by wein''s bridge Discussions

Write discussion on Measurement of frequency by wein''s bridge
Your posts are moderated
Related Questions
A squirrel-cage inductionmotor operates at a slip of 0.05 at full load. The rotor current at starting is five times the rotor current at full load. Neglecting stator resistance and

Explain the Sequential Circuits? The Logic circuits whose outputs, at any instant of time, depends not merely the present input but as well the past output called sequential ci

Hexadecimal is of use in IT because (1) It is a compact system (e.g. only 3 digits represent the number 986) (2) As 16 are a power of 2 it turns out to be quite easy to conv

Q. (a) Show by applying Ampere's circuital law that themagnetic field associated with a long straight, current-carrying wire is given by B φ = µ 0 I/(2πr), where the subscript φ d

A dc machine, operating as a generator, develops 400 V at its armature terminals, corresponding to a field current of 4 A, when the rotor is driven at 1200 r/min and the armature c

What is meant by doping? How does it affect a semiconductor? Doping: The process through which an impurity is added to semiconductor is termed as doping. A semiconductor to th

Q. Write a brief note on common drain amplifier Since voltage at the gate-drain is more easily determined than that of the voltage at gate-source, the voltage source in the inp

Construction and operation of jet: jet is a three terminal device one terminal capable of controlling the current between the other two. Basic construction of an n chann

An abrupt silicon (n i = 10 10 cm -3 ) p-n junction consists of a p-type region containing 10 16 cm -3 acceptors and an n-type region containing 5 x 10 16 cm -3 donors. a)

There is a requirement to propose a new ASIC design flow within your company, from VHDL design capture through to GDSII tape out.  It is very important that the flow includes all t