EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Textbook Question
Chapter 5, Problem 10R
A three-way switch may be compared to a _____ switch.
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Question 2
A transistor is used as a switch and the waveforms are shown in Figure 2. The parameters are
Vcc = 225 V, VBE(sat) = 3 V, IB = 8 A, VCE(sat) = 2 V, Ics = 90 A, td = 0.5 µs, tr = 1 µs, ts = 3 µs, tƒ
= 2 μs, and f
10 kHz. The duty cycle is k 50%. The collector- emitter leakage current is
ICEO = 2 mA. Determine the power loss due to the collector current:
=
=
=
(a) during turn-on ton = td + tr
VCE
Vcc
(b) during conduction period tn
V CE(sat)
0
toff"
ton
Ics
0.9 Ics
(c) during turn-off toff = ts + tf
(d) during off-time tot
(e) the total average power losses PT
ICEO
0
IBS
0
Figure 2
V BE(sat)
0
主
*
td
tr
In
Is
If
to
iB
VBE
T= 1/fs
Question 1:
The beta (B) of the bipolar transistor shown in Figure 1 varies from 12 to 60. The load resistance
is Rc = 5. The dc supply voltage is VCC = 40 V and the input voltage to the base circuit is
VB = 5 V. If VCE(sat) = 1.2 V, VBE(sat) = 1.6 V, and RB = 0.8 2, calculate:
(a) the overdrive factor ODF.
(b) the forced ẞ
(c) the power loss in the transistor PT.
IB
VB
RB
+
V BE
RC
Vcc'
Ic
+
IE
Figure 1
VCE
I need help in creating a matlab code to find the currents
Chapter 5 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 5 - The identified grounded circuit conductor must be...Ch. 5 - Explain how lighting switches are rated.Ch. 5 - Prob. 4RCh. 5 - Prob. 5RCh. 5 - To control a lighting load from one control point,...Ch. 5 - Prob. 7RCh. 5 - Complete the connections in the following...Ch. 5 - Complete the connections for the diagram....Ch. 5 - A three-way switch may be compared to a _____...Ch. 5 - Prob. 11R
Ch. 5 - Complete the connections in the following...Ch. 5 - When connecting 4-way switches, care must be taken...Ch. 5 - Show the connections for a ceiling outlet that is...Ch. 5 - Match the following switch types with the correct...Ch. 5 - When connecting single-pole, 3-way, and 4-way...Ch. 5 - What section of the Code emphasizes the fact that...Ch. 5 - If you had to install an underground 3-wire feeder...Ch. 5 - Is it always necessary to attach the bare...Ch. 5 - List the methods by which an equipment grounding...Ch. 5 - When two nonmetallic-sheathed cables (Type NM-B)...Ch. 5 - Define an equipment grounding conductor.Ch. 5 - When metal toggle switchplates are used with...Ch. 5 - Does the Code permit the ampacity of switch legs...Ch. 5 - Prob. 26RCh. 5 - Prob. 27R
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