1. A voltage regulator sits between an unregulated input voltage and a regulated output voltage. In the ideal case, what is the output resistance of the regulator? 2. The resistor-Zener circuit below is the simplest of the so-called shunt regulators. + R + VIN D RL VOUT (a) Draw the small-signal equivalent circuit of the regulator assuming the diode has a dynamic Zener resistance rz. (b) Show that the small-signal output resistance of the regulator is Rout = rz || R. (c) What options exist for making Rout as small as possible?

1. A voltage regulator sits between an unregulated input voltage and a regulated output voltage. In the ideal case, what is the output resistance of the regulator? 2. The resistor-Zener circuit below is the simplest of the so-called shunt regulators. + R + VIN D RL VOUT (a) Draw the small-signal equivalent circuit of the regulator assuming the diode has a dynamic Zener resistance rz. (b) Show that the small-signal output resistance of the regulator is Rout = rz || R. (c) What options exist for making Rout as small as possible?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Zener diodes are special purpose diodes designed to operate in their breakdown regions. Describe the working principle and characteristics of a typical Zener diode found in the market place. The Zener-diode regulator circuit shown below is to be used to provide a stabilised output to the load. The zener diode characteristic is also shown. Find the load voltage and source current if the battery voltage is 20 V, series resistance is 1.4 kohm and load resistance is 6 kohm
A highly inductive d.ç. load requires 12 A at 150 V from a 240 V single-phase a.c. supply. Give dèsign details for this requirement using (i) bi-phase half-wave and (ii) bridge connection. Assume each diode to have a volt-drop of 0.7 V. Make comparisons between the two designs.
Show the downward shift of the output signal with the series capacitor and diode. Clampers or DC restorers are clamp a peak of a waveform to a specific DC level compared with a capacitively coupled signal which swings about its average DC level (usually 0V). If the diode is removed from the clamper, it defaults to a simple coupling capacitor– no clamping. What is the clamp voltage? And, which peak gets clamped? Why is this so? Produce a schematic diagram with LTspice schematic capture program. Voltage values: Capasitor value: 1000 pF DC offset: 0 V Amplitude: 5 V Freq: 1 KHz
I need detailed solution.TY
Four diodes and one Zener diode are connected to form the circuit below. a) Describe how a single diode behaves when forward biased. 5) draw the output as the input changes from -12 V to +12 V. Assume that all diodes can be represented by a constant-voltage of 0.6 V (in forward bias) and the Zener diode has a breakdown voltage of 6.8 V. d) What is the function of the circuit? Suggest a proper application. I kN Da Dr
Plot the diode reverse characteristic, and estimate an approximate value for the reverse saturation current IS. From the results obtained in this experiment, compute the maximum power dissipated in the diode
Design a zener diode based voltage regulator circuit to maintain the 16v across the load of 16ohm.value of knee current across the zener diode is 160mA.find the value of series resistance so that output maintains at 16v.if the input varies between 20v to 26v
When the diode is connecting in Forward Bias the current of it is in order of .... .... Answer:
Choice the correct answer
Determine minimum and maximum input voltages required for proper regulation to be performed by a Zener diode when connected across a variable input voltage. Assume Izk = 1.0mA, Izm = 120mA, Vz = 10V and series current limiting resistor Rs = 5602. Draw circuit diagram and plot graph for reverse V-I characteristic and label proper values on graph.
Analyze the circuit shown below. a. Use the constant voltage drop (CVD) model with 0.7V forward voltage drop to quickly verify that the diode is forward-biased. What is the DC output voltage? What is the DC current through the diode? b. Make a better estimate of the DC output voltage by employing the diode equation (Shockley equation). Assume Iş = 10-14, n= 1, and room temperature (300K). c. Determine the dynamic resistance ra (small-signal resistance) of the diode from the operating point information in part b). Now, consider the case in which a 60HZ sinusoid with 1V peak amplitude is applied [ Vs signal model) to find the AC output voltage due to the sinusoidal component at the supply terminal. What is the resulting total (DC + AC) output voltage at the given DC operating point? 1V-sin(2n-60-t) ]. Use the CVD + resistance diode model (small- 3kQ Vs No 6V
A diode whose internal resistance is 20 ohms is to supply power to a 1000-ohm load from a 110V(rms) source of supply. Calculate the peak load current, dc load current. and determine the percent regulation from no load to the given load. a.) Peak Load Current= 120.8mA; DC load current=25.5mA b.) Peak Load Current= 133.3mA; DC load current=29.4mA c.) Peak Load Current= 144.3mA; DC load current=34.7mA d.) Peak Load Current= 152.5mA; DC load current= 48.5mA