Electrical Engineering - Passive Filters - Discussion
Discussion Forum : Passive Filters - General Questions (Q.No. 2)
2.
An RL low-pass filter consists of a 5.6 mH coil and a 3.3 k
resistor. The output voltage is taken across the resistor. The circuit's critical frequency is
resistor. The output voltage is taken across the resistor. The circuit's critical frequency isDiscussion:
11 comments Page 2 of 2.
HAris said:
6 years ago
No, @SANA.
Critical frequency is the highest magnitude of frequency above which the waves penetrate the ionosphere and below which the waves are reflected back from the ionosphere.
Ionosphere: The layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio waves.
CUT OFF FREQUENCY: It is a level above or below at which the system fails to operate.
Critical frequency is the highest magnitude of frequency above which the waves penetrate the ionosphere and below which the waves are reflected back from the ionosphere.
Ionosphere: The layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio waves.
CUT OFF FREQUENCY: It is a level above or below at which the system fails to operate.
(1)
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