Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 16, Problem 11ST
When a diode is forward-biased, it is
- blocking current
- conducting current
- similar to an open switch
- similar to a closed switch
- answers (a) and (c)
- answers (b) and (d)
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2. Using the approximate method, hand sketch the Bode plot for the following transfer
functions.
a) H(s) = 10
b) H(s) (s+1)
c) H(s):
=
1
=
+1
100
1000 (s+1)
10(s+1)
d) H(s) =
(s+100)
(180+1)
Q4: Write VHDL code to implement the finite-state machine described by the state
Diagram in Fig. 1.
Fig. 1
1. Consider the following feedback system.
Bode plot of G(s) is shown below.
Phase (deg)
Magnitude (dB)
-50
-100
-150
-200
0
-90
-180
-270
101
System: sys
Frequency (rad/s): 0.117
Magnitude (dB): -74
10°
K
G(s)
Bode Diagram
System: sys
Frequency (rad/s): 36.8
Magnitude (dB): -99.7
System: sys
Frequency (rad/s): 20
Magnitude (dB): -89.9
System: sys
Frequency (rad/s): 20
Phase (deg): -143
System: sys
Frequency (rad/s): 36.8
Phase (deg): -180
101
Frequency (rad/s)
a) Determine the range of K for which the closed-loop system is stable.
102
10³
b) If we want the gain margin to be exactly 50 dB, what is value for K we should
choose?
c) If we want the phase margin to be exactly 37°, what is value of K we should choose?
What will be the corresponding rise time (T) for step-input?
d) If we want steady-state error of step input to be 0.6, what is value of K we should
choose?
Chapter 16 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 16 - Silicon can be doped with a trivalent material...Ch. 16 - The minority carriers in an n-type material are...Ch. 16 - Before a diode fully conducts, the bias must...Ch. 16 - When forward bias is applied to a diode, the...Ch. 16 - The output frequency from a full-wave rectifier is...Ch. 16 - The peak output voltage of a full-wave bridge...Ch. 16 - If one diode is open in a bridge rectifier, the...Ch. 16 - Line regulation specifies how much change occurs...Ch. 16 - Normally, zener diodes, varactor diodes, and...Ch. 16 - Prob. 10TFQ
Ch. 16 - Â Atoms within a semiconductor crystal arc held...Ch. 16 - Free electrons exist in the valence band...Ch. 16 - Prob. 3STCh. 16 - The process of adding impurity atoms to a pure...Ch. 16 - Prob. 5STCh. 16 - The majority carriers in an n-type semiconductor...Ch. 16 - The pn junction is found in diodes silicon all...Ch. 16 - Prob. 8STCh. 16 - A fixed dc voltage that sets the operating...Ch. 16 - Prob. 10STCh. 16 - When a diode is forward-biased, it is blocking...Ch. 16 - Prob. 12STCh. 16 - The process of converting ac to pulsating dc is...Ch. 16 - Prob. 14STCh. 16 - The number of diodes used in a half-wave rectifier...Ch. 16 - If a 75 V peak sine wave is applied to a half-wave...Ch. 16 - The output frequency of a full-wave rectifier with...Ch. 16 - Two types of full-wave rectifier are single diode...Ch. 16 - When a diode in a center-tapped rectifier opens,...Ch. 16 - During the positive half-cycle of the input...Ch. 16 - The process of changing a half-wave or a full-wave...Ch. 16 - Prob. 22STCh. 16 - The zener diode is designed to operate in zener...Ch. 16 - Zener diodes are sometimes used as current...Ch. 16 - Varactor diodes are used as variable resistors...Ch. 16 - Prob. 26STCh. 16 - In a photodiode, light produces reverse current...Ch. 16 - List two semiconductive materials.Ch. 16 - How many valence electrons do semiconductors have?Ch. 16 - In a silicon crystal, how many covalent bonds does...Ch. 16 - What happens when heat is added to silicon?Ch. 16 - Name the two energy levels at which current is...Ch. 16 - Describe the process of doping and explain how it...Ch. 16 - What type of impurity is antimony? What type of...Ch. 16 - Explain what a hole is.Ch. 16 - What is recombination?Ch. 16 - How is the electric field across the pn junction...Ch. 16 - Because of its barrier potential, can a diode be...Ch. 16 - To forward-bias a diode, to which region must the...Ch. 16 - Prob. 13PCh. 16 - Explain how to generate the forward-bias portion...Ch. 16 - What would cause the barrier potential to decrease...Ch. 16 - Determine whether each diode in Figure 16-74 is...Ch. 16 - Determine the voltage across each diode in Figure...Ch. 16 - Examine the meter indications in each circuit of...Ch. 16 - Determine the voltage with respect to ground at...Ch. 16 - Calculate the average value of a half-wave...Ch. 16 - Prob. 21PCh. 16 - Can a diode with a PIV rating of 50 V be used in...Ch. 16 - Prob. 23PCh. 16 - Calculate the average value of a full-wave...Ch. 16 - Consider the circuit in Figure 16-79. What type of...Ch. 16 - Calculate the peak voltage rating of each half of...Ch. 16 - Prob. 27PCh. 16 - Prob. 28PCh. 16 - The ideal dc output voltage of a capacitor-input...Ch. 16 - Refer to Figure 16-80 and draw the waveforms VA...Ch. 16 - A certain voltage regulator has a no-load output...Ch. 16 - Prob. 32PCh. 16 - Prob. 33PCh. 16 - The VZ of a given zener diode changes 38 mV for a...Ch. 16 - Figure 16-81 is a curve of reverse voltage versus...Ch. 16 - Refer to Figure 16-81 and determine the value of...Ch. 16 - When the switch in Figure 16-82 is closed, will...Ch. 16 - Prob. 38PCh. 16 - From the meter readings in Figure 16-83, determine...Ch. 16 - Each part of Figure 16-84 shows oscilloscope...Ch. 16 - For each set of measured voltages at nodes 1 and 2...Ch. 16 - Determine the most likely failure in the circuit...Ch. 16 - Prob. 43PCh. 16 - Prob. 44PCh. 16 - Prob. 45PCh. 16 - Prob. 46PCh. 16 - Open file P16-47 and determine if there is a...Ch. 16 - Open file P16-48 and determine if there is a...Ch. 16 - Open file P16-49 and determine if there is a...Ch. 16 - Open file P16-50 and determine if there is a...Ch. 16 - Prob. 51PCh. 16 - Open file P16-52 and determine if there is a...
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