Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
6th Edition
ISBN: 9781305634312
Author: Herman, Stephen L.
Publisher: Cengage Learning
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A transformer has a primary voltage of 240 V and a secondary voltage of 48 V. What is the turns ratio of this transformer?
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Design a counter to count-up from 2 to 7 using three of
D Flip Flops
(3) 3-Bit Count up (3 to 5) Using D Flip-Flop:
The State Equation of D Flip-Flop:
Q(t+1)=D(t) => Dn=Qn
Present State
D Flip-Flop
Next State
n
Q2p Q1p Q0p
3
0 1
1
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Q2n Q1n Q0n D2 D1 D0
0 0 1 0 0
4
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1
1 0
1
5
1 0
1
0
1
1
01
1
D2-Sum(3,4) and don't care X-Sum(0,1,2,6,7)
D1=Sum(5) and don't care X=Sum(0,1,2,6,7)
D0=Sum(4,5) and don't care X=Sum(0,1,2,6,7)
Using K-map to simplify the functions:
D2=Q1+Q0'
D1=Q1'QO
DO=Q1'
XOX
XOX
Q2 10
Q2 01
Q2 1xx
Q0
QO
Qo
D2 Q2
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Q2
D1 Q1
BCD
CK
Q1
DO QF
►CK
Q0
☐ Present State Next State D Flip-Flop
n Q2p Q1p Q0p Q2n Q1n Q0n D2 D1 D0
2 0 1
0
0 1 1 0 1 1
3 0
1
1
1
0
0 1 00
4
1
0
0
1
0
1
1
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1
5
1
0
1
1
1
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1 1
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6
1
1
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0
1
0
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0
D2
D2=Sum(3,4,5), X=Sum(0,1,7)
D1
Q2
1
Q1
1
0
☑
0
Qo
D2=Q0+Q1'
✗
0
Q1
Chapter 31 Solutions
Mindtap Electrical, 4 Terms (24 Months) Printed Access Card For Herman's Delmar's Standard Textbook Of Electricity, 6th (mindtap Course List)
Ch. 31 - Prob. 1RQCh. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Prob. 4RQCh. 31 - What type of motor is known as a constant-speed...Ch. 31 - What is CEMF?Ch. 31 - Prob. 7RQCh. 31 - Prob. 8RQCh. 31 - Prob. 9RQCh. 31 - What type of motor should never be operated at no...
Ch. 31 - Prob. 11RQCh. 31 - What is the most common way of changing the...Ch. 31 - Prob. 13RQCh. 31 - Prob. 14RQCh. 31 - What device is used to disconnect power to the...Ch. 31 - Prob. 16RQCh. 31 - Who was the first person to establish a...Ch. 31 - One horsepower is equal to how many W?Ch. 31 - A motor is operating a load that requires a torque...Ch. 31 - The motor in Question 19 is connected to a 250-VDC...Ch. 31 - Prob. 1PA
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