Scientificfuns

                                                            RC PHASE SHIFT OSCILLATOR        The above figure shows a RC PHASESHIFT OSCILLATOR . The phaseshift network consist of three RC voltage dividers . At the operation frequency of each RC network introduce a phase shift of 60 0 and the total by three RC is 180 0 , anot6her 180 is produced at the input of the inverting amplifier(RC networks connected to –ve terminal of amplifier so it is inverting). So the total phase shift is 360 0 (condition for standard oscillation). DESIGN            OSCILLATOR FREQUENCY F=1/2 ∏ RC  = 1khz Take C 1 =C 2 =C 3 =0.1 µF Then R 1 =R 2 =R 3 = 680 Ω Gain  R F /R I = 29  Take R i = 1.2K Ω Then R F = 34.8 K Ω commonly we use 100k pot. ...

                                                             RC INTEGRATOR                 COMPONENTS                    1. Resistor - 15K                    2. Capacitor - 0.1 μF                                                 A Circuit which gives an output directly propotional to the integral of the input is called an inegrator.                                 As we apply a square wave as an input, during the positive halfcycle the voltage across the capacitor charge to maximum.During ...

RC DIFFERENTIATOR                                             COMPONENTS                  RESISTOR (R1) - 1K                  CAPACITOR(C1) - .1 μF                                   A circuit which gives an output voltage propotional to derivative of it's input is known as differentiating circuit.                                     When a square wave is applied at the input, during  the positive half cycle capacitor charges so, initially the voltage across the resistor will be the applied voltage. As the capacitor charges the voltage across resistor decreases. During negative half cycle the capaci...