Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Textbook Question
Chapter 16, Problem 20ST
During the positive half-cycle of the input voltage in a bridge rectifier.
- one diode is forward-biased
- all diodes are reverse-biased
- all diodes are reverse-biased
- two diodes are forward-biased
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I need a detailed solution to a
problem.
The far-zone electric field intensity (array factor) of an end-fire two-element array
antenna, placed along the z-axis and radiating into free-space, is given by
E=cos (cos - 1)
Find the directivity using
(a) Kraus' approximate formula
(b) the DIRECTIVITY computer program at the end of this chapter
Repeat Problem 2.19 when
E = cos
-jkr
0505π
$[
(cos + 1)
(a). Elmax = Cost (case-1)] | max"
= 1 at 8-0°.
0.707 Emax = 0.707.(1) = cos [(cose,-1)]
(cose-1) =
± 0,= {Cos' (2)
= does not exist
(105(0)=
90° = rad.
Bir
Do≈ 4T
ar=2() =
=
Bar
4-1-273 = 1.049 dB
T₂
a. Elmax = cos((cose +1)),
0.707 = cos (Close,+1))
= 1
at 6 = π
Imax
(Cose+1)=== G₁ = cos(-2) does not exist.
Girar=2()=π.
4T
\cos (0) + 90° + rad
Do≈ = +=1.273=1.049dB
IT 2
I need an expert mathematical solution.
The E-field pattern of an antenna. independent of , varies as follows:
0° ≤ 0≤ 45°
E = 0
45°
{1
90°
90° < 0 ≤ 180°
(a) What is the directivity of this antenna?
(b) What is the radiation resistance of the antenna at 200 m from it if the field is equal
to 10 V/m (rms) for Ø
=
0° at that distance and the terminal current is 5 A (rms)?
I need an expert mathematical solution.
The normalized far-zone field pattern of an antenna is given by
E =
{®
(sin
cos)/
0
Find the directivity using
0 ≤ 0 ≤ π and 0≤ 0≤ π/2.
3m2sds2,
elsewhere
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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