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Dr. Mohamed Refky Amin
Electronics and Electrical Communications Engineering Department (EECE)
Cairo University
http://scholar.cu.edu.eg/refky/
Resonance Circuits
Part III
Outline of This Lecture
• Previously on ELC 1030
• Examples on Parallel Resonance Circuits
• Double tuned filter
Dr. Mohamed Refky
Previously on ELC 1030
In parallel circuits, at resonance,
the capacitor and the coil are
replaced by an Open Circuit.
Ideal Parallel Circuit
Dr. Mohamed Refky
Previously on ELC 1030
Quality Factor of a Real Coil
Dr. Mohamed Refky
Previously on ELC 1030
Dr. Mohamed Refky
Previously on ELC 1030
The Equivalent All-Parallel Circuit
Dr. Mohamed Refky
Previously on ELC 1030
The Equivalent All-Parallel Circuit
Dr. Mohamed Refky
Previously on ELC 1030
Dr. Mohamed Refky
Previously on ELC 1030
Bandwidth and Cut-off Frequencies
Dr. Mohamed Refky
Previously on ELC 1030
Bandwidth and Cut-off Frequencies
Dr. Mohamed Refky
Previously on ELC 1030
Dr. Mohamed Refky
Resonance at
Previously on ELC 1030
Dr. Mohamed Refky
Parallel Resonance
Example (1)
Dr. Mohamed Refky
Parallel Resonance
Example (2)
Dr. Mohamed Refky
Parallel Resonance
Example (3)
Dr. Mohamed Refky
Parallel Resonance
Example (4)
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Double tuned filter
Dr. Mohamed Refky
Passive Filters
Example (5)
Dr. Mohamed Refky
Passive Filters
Example (6)
Dr. Mohamed Refky