diode applications - iteso · 2007-01-29 · some figures of this presentation were taken from the...
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Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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Diode Applications
Dr. José Ernesto Rayas Sánchez
Some figures of this presentation were taken from the instructional resources of the following textbooks:
A. S. Sedra and K. C. Smith, Microelectronic Circuits. New York, NY: Oxford University Press, 2003.
2Dr. J. E. Rayas Sánchez
Outline
Half-wave rectifier
Precision high-wave rectifier
Full-wave rectifiers
Peak detectors
Voltage limiters or clippers
DC voltage restorer or clampers
Voltage multipliers
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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3Dr. J. E. Rayas Sánchez
Half-Wave Rectifier
Transfer functionModel
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Half-Wave Rectifier (cont)
Output for a sinusoidal input
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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5Dr. J. E. Rayas Sánchez
Precision Half-Wave Rectifier
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Full-Wave Rectifier using Center-Tap Transfor.
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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7Dr. J. E. Rayas Sánchez
Full-Wave Rectifier (Bridge Rectifier)
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Typical Usage of Full-Wave Rectifiers
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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Peak Detector
Ideal behavior
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Peak Detector (cont)
Practical behavior
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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Peak Detector (cont)
Practical behavior
12Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 100µF
Using diode 1N4004
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
0 1 2 3 4 5-2000
0
2000
4000
6000
8000
Time (ms)
Cur
rent
(mA
)
iD
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
7
13Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 10µF
Using diode 1N4004
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
0 1 2 3 4 5-200
0
200
400
600
800
Time (ms)
Cur
rent
(mA
)
iD
14Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 1µF
Using diode 1N4004
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
0 1 2 3 4 5-20
0
20
40
60
80
Time (ms)
Cur
rent
(mA
)
iD
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
8
15Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 100µF
Using ideal diode
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
0 1 2 3 4 5-2000
0
2000
4000
6000
8000
Time (ms)
Cur
rent
(mA
)iD
16Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 10µF
Using ideal diode
0 1 2 3 4 5-200
0
200
400
600
800
Time (ms)
Cur
rent
(mA
)
iD
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
9
17Dr. J. E. Rayas Sánchez
Peak Detector – Transient Response
vS = 10V sin(2πft)f = 1KHzRL = 1KΩC = 1µF
Using ideal diode
0 1 2 3 4 5-20
0
20
40
60
80
Time (ms)
Cur
rent
(mA
)
iD
0 1 2 3 4 5-20
-15
-10
-5
0
5
10
Time (ms)
Vol
tage
(V)
vS
vD
vO
18Dr. J. E. Rayas Sánchez
General Voltage Limiters (Clippers)
Passive voltage limiters have K ≤ 1
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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Diode Voltage Limiters (Diode Clippers)
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Typical Diode Voltage Limiter
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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DC Voltage Restorer or Clampers
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DC Voltage Restorer or Clampers (cont)
Diode ApplicationsDr. José Ernesto Rayas Sánchez
January 25, 2007
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Half-Wave Voltage Doubler