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 very widely used alternative form of synchronous motor is the  ' indu c tion motor'. This has the advantage that it does not require an auxiliary motor to run the rotor up t

Q. Explain working of three-phase transformers? Transformation in three-phase systems can be accomplished in either of two ways: (1) connecting three identical single-phase tra

Q. Write and execute a PSpice programto analyze the resistor bridge circuit shown in Figure to solve for the node voltages and the voltage-source current. Then find the voltage acr

The Input Output System The input output  system provides  the physical  connection between  the equipment  and the PLC there are many  different kinds  of I/O cards  which ser

schmitt triggering with emitter coupled transister

A pure sine wave with a frequency of 100Hz is sampled at 150Hz. At which one of the following frequencies would you expect an alias?

Q. Nonsalient-pole rotor construction? The nonsalient-pole (smooth or cylindrical) rotor construction is preferred for high-speed turbine-driven alternators (known also as turb

Q. Describe Common-Mode Rejection Ratio ? When there is a common-mode input voltage, i.e., when the input signals are equal and greater than zero, the output voltage of an idea

Technical Loss in Electrical Systems Technical loss is inherent in electrical systems, as all electrical devices have a few resistances and the flow of currents causes a power