Current series feedback amplifier lab manual

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1. RC coupled amplifier 2 2. Darlington Emitter Follower 8 3. Voltage Series Feedback Amplifier 14 4. RC Phase shift Oscillator 22 5. Hartley Colpitt's Oscillator 26 6. Clipping circuits 30 7. Clamping circuits 40 8. Op-Amp applications 46 9. Model of the basic amplifier according to the feedback connection style The purpose of this short section paragraph is to emphasize an understanding of the models of the basic amplifiers depicted in Figs. (a)-(d). From the section , the student can understand that for a series in feedback connection the basic amplifier will be. Non-Inverting Op-Amp. In this configuration of Op-amp the input signal is directly fed to the non inverting terminal resulting in a positive gain and output voltage in phase with input as compared to inverting Op-amp where the gain is negative and output voltage is out of phase with input, and to stabalize the circuit a negative feedback is applied through a resistor(Rf) and the inverting.

Current series feedback (Af = I o/V s) -Trans-conductance amplifier 7 Current shunt feedback (Af = I o/I s) - Current amplifier Here voltage refers to connecting the output voltage as input to the feedback network. Similarly current refers to connecting the output current as input to the feedback network. Series refers to connecting the feedback signal in series with the input. 1. Give an example for voltage-series feedback. The Common collector or Emitter follower amplifier is an example for voltage series feedback. www.doorway.ru the properties of negative feedback. i. Negative feedback reduces the gain ii. Distortion is very much reduced 3. Define voltage shunt feedback. to study the magnetic amplifier and plot its load current v/s control current (a)series connected mode (b)parallel connected mode. 8 4. to plot the load current v/s control current characteristics for self excited mode of the magnetic amplifier. 11 5. to study lead lag compensator and draw magnitude and phase plots. 14 6.