The input-output differential at which the voltage regulator will no longer maintain regulation is the dropout voltage. (3-a) is a Voltage-Shunt feedback amplifier with: o f V I (B) Voltage-Series Feedback Voltage-Series topology of the feedback amplifier is shown in Fig.(2-b). Shunt-Shunt Feedback Systems, also known as shunt voltage feedback, operates as a current-voltage controlled feedback system. What is the difference between voltage series and current series feedback amplifier? While this action does turn the amplifier into a two-port, it will not lead to a correct representation of the actual 1 . In the shunt-shunt feedback configuration the signal fed back is in parallel with the input signal. Fig. In the shunt voltage regulator the output DC voltage is constant. Series voltage regulator has not so good voltage regulation at high load currents. It mixes the source signal and feedback signal thus produces positive or negative feedback for the device. The output voltage is sampled when we connect feedback network in either shunt or in series with the output. (2) Feedback in Amplifiers Object ... State the difference between current and voltage feedback. Voltage series feedback (Af = V o/V s) – Voltage amplifier Voltage shunt feedback (Af = V o/I s) – Trans-resistance amplifier 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. Series voltages regulator is connected in series with the load. Operation of Feedback Amplifier Experiment No. Both are equally important. The report also points out the many similarities between the two versions. 1.) I feel they are kind of the same. I feel they are kind of the same. Voltage-Feedback operational amplifiers (VFA op amps) allow circuit … The output voltage is sensed and the current is subtracted from the input current in shunt, and as such its the currents, not the voltages that subtract. Further reduction in input voltage will result in reduced output voltage. Most inverting and non-inverting operational amplifier circuits operate with series-shunt feedback producing what is known as a “voltage amplifier”. LECTURE 280 – SERIES-SHUNT AND SHUNT-SERIES FEEDBACK (READING: GHLM – 579-587) Objective The objective of this presentation is: 1.) The ideal inverting operational amplifier with voltage shunt feedback from output terminal to the inverting input terminal feedback impedance Z f and with non-inverting terminal grounded configuration is shown is figure 1. Voltage developed across load resistance is sampled and feedback to input through resistance R f and R E (potential divider) as shown in Fig.(3-b). No comparison and so no choice between the two. 3. It mixes the source signal and feedback signal thus produces positive or negative feedback for the device. Could someone please explain how to design a series-series feedback and a series-shunt feedback. Wiki User November 26, 2010 6:25PM. Difference between shunt voltage regulator and series voltage regulator Author: Technical Editor Category: Electronics Articles 18 Apr 17 Following are main difference between shunt voltages regulator and series voltages regulator Voltage series = No voltage gain but there is a current gain and is used for Impedance matching low impedance loads. An op-amp is a phase-inverting voltage amplifier (high input-impedance, low output-impedance) with a large voltage gain. Dropout voltage is the minimum difference between input voltage and output voltage for which the regulator can still supply the specified current. LECTURE 280 – SERIES-SHUNT AND SHUNT-SERIES FEEDBACK (READING: GHLM – 579-587) Objective The objective of this presentation is: 1.) Construction and study of Negative Feedback Amplifier. What’s The Difference Between Voltage-Feedback And Current-Feedback Op Amps? Any examples I've seen for this type of topology are either the collector feedback single stage amp or and classic inverting op-amp circuit.