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A Wien bridge oscillator produces sine waves. In order for the sine waves to maintain a steady amplitude, a positive feedback system is used with some sort of control to limit gain. In order for the positive feedback system to work, the waves being "fed back" to the amplifier have to be in phase with the waves being generated. Thus, you need a phase shift network to ensure that the phases of the waves match, which in the case of a positive feedback system means that the generated waves need to go through a 360o phase shift during the feedback process.

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Q: What is the purpose of a phase-shift network in a Wien bridge oscillator?
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Related questions

Which is better RC phase shift oscillator or wien bridge oscillator?

phaseshift of wienbridge is 0


What are the methods of changing the frequency of Wien Bridge Oscillator?

f=0.159/RC . where R and C are the feedback network of wien bridge


Applications of wien bridge oscillator?

A Wein Bridge Oscillator is a oscillator which is used for the measurement of Audio Frequency.


What are the advantages of wien bridge oscillator?

RC phase shift oscillator is used to generate frequency in audio range and it is a fixed audio frequency oscillator where as wien bridge oscillator is a variable audio frequency oscillator for high frequency oscillations it is better to design wide band amplifier with LC network


Application of wein bridge oscillator?

wein bridge in functional genertors by P.SELVARASU


What type of bridge is used to segment network traffic for the purpose of reducing bottlenecks?

Local Bridge


What is the frequency of wein bridge oscillator?

f = 1/(2πRC)


What type of waveform a wein bridge oscillator generates?

sine wave


What was Hewlett Packards first product?

STABILIZED WIEN BRIDGE OSCILLATOR (The 200A)


What is the difference between wien-bridge oscillator and phase-shift oscillator?

Rc phase shift uses negative feedback.. Weinbridge uses both +ve and -ve feedback


You want practical ckt of wien bridge oscillator using only transistors?

for project work


Tell me all about Wien-bridge oscillators based on?

A Wien bridge oscillator is a type of electronic oscillator that generates sine waves without having any input source. It can output a large range of frequencies. The bridge comprises four resistors and two capacitors. The circuit is based on a network originally developed by Max Wien in 1891. At that time, Wien did not have a means of developing electronic gain so a workable oscillator could not be realized. The modern circuit is derived from William Hewlett's 1939 Stanford University master's degree thesis. Hewlett, along with David Packard co-founded Hewlett-Packard. Their first product was the HP 200A, a precision sine wave oscillator based on the Wien bridge. The 200A is a classic instrument known for its low distortion. The frequency of oscillation is given by: