Phase Shift Oscillator Updated - Engineer Simple

Search This Blog

Phase Shift Oscillator Updated

Phase Shift Oscillator

Fig-1 shows the circuit of a phase shift oscillator. It consists of a conventional single transistor
amplifier and a RC phase shift network. The phase shift network consists of three sections R1C1, R2C2
. and R3C3. At some particular frequency f0, the phase shift in each RC section is 60º so that the total
. Phase- shift produced by the RC network is 180º.


Phase Shift Oscillator Updated


The frequency of oscillations is give by


When the circuit is switch on, it produces oscillations of frequency determined by exp. (i). The affair E0 of the amplifier is fed back to RC feedback network. This network
produces a phase shift of 180º and a voltage Ei
appears at its affair which is applied to the transistor
Obviously, the feedback bit m = Ei/ E0.
The feedback phase is correct.
A phase shift of 180º
is produced by the transistor amplifier. A further phase shift of 180º is produce by the RC network.
As a result, the phase shift around the entire circle is 360º.


(i) It does n’t bear manufactories or inductors.
( ii) It can be use to produce truly low frequence.
(iii) The circuit provides good frequency stability.


(i) It’s delicate for the circuit to start oscillations as the feedback is generally small.
(ii) The circuit gives small affair.

Our another posts link:

Engineering: Types of Electron Emission ,Solar cellsolar plant for 100 kW Installation.

Education: How to be successful in life,Student and Social Service compositionImportance of Reading Newspaper.

Biographies of famous peopleSTEVE JOBSProphet Muhammad (Sm),Biography of Bill GatesAPJ Abdul Kal.

BCS Preliminary: All Bcs Question, Answer and Solve.

IT solutions: Google Adsense Approval পাওয়ার করণীয়কম্পিউটারের  Speed  বাড়ানোর কিছু উপায়

To visit our Job related website Click Here

Next Post Previous Post
No Comment
Add Comment
comment url