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
Fermi Dirac level: Sol. The Fermi level is simply a reference energy level. It is the energy level at which the probability of finding an electron n energy unit above it in

Metering and Billing System Previously, you have learnt about various measures for reducing commercial losses of a utility. You have studied in which the metering and billing

Q. What do you mean by Instrument transformers? These are generally of two types, potential transformers (PTs) and current transformers (CTs). They are designed in such a way t

Three byte instruction The  instruction which  have 16  bit data address  as its  operand  are three byte  instruction. They  need three  memory  locations to store  them in m

Calculate the monthly electric bill for TESTU.  Metering is as follows: B 00,000 kWHr C 00,000   kVARHr D 0,000        kW  peak demand Facilities Charge = $500

Aloudspeaker is a common electrochemical transducer in which vibration is caused by changes in the input current to a coil which, in turn, is coupled to a magnetic structure that c

An intrinsic semiconductor at room temperature has free electrons

Effect of Frequency a.From equation for given  H p and μ P v α √f b.From  equation the depth of penetration for a given  material δ α 1/ √f c.From  equation hyst

Considering the TTL NAND gate circuit of Figure, with one or more inputs low, show that the output will be high.

Central Energy Conservation Fund This fund is to be set up at the Centre to develop the delivery mechanism for large-scale adoption of energy efficiency services like as perfo