Electronics - Inductors - Discussion
Discussion Forum : Inductors - General Questions (Q.No. 9)
9.
A series RL filter circuit with an output across the inductor will result in what type of filtering?
Discussion:
6 comments Page 1 of 1.
Prasanna said:
1 decade ago
If the output is taken across the inductor, high frequencies are passed and low frequencies are attenuated (rejected). Thus, the circuit behaves as a high-pass filter. If, though, the output is taken across the resistor, high frequencies are rejected and low frequencies are passed. In this configuration, the circuit behaves as a low-pass filter. Compare this with the behaviour of the resistor output in an RC circuit, where the reverse is the case.
Sivapramod said:
1 decade ago
Look at the construction of a pi filter which has a inductor series connected and act as a low pass filter. So here the answer it low pass filter.
Craig said:
1 decade ago
I always have to figure these out from basics. If you can remember that the impedance of an inductor is given by Z = j*2π*f*L, then it's reasonably easy to figure out if you then treat the system like a voltage divider.
If the output is taken over the inductor then as frequency increases the output taken across it will also increase.
If the output is taken over the inductor then as frequency increases the output taken across it will also increase.
Sivapramod said:
1 decade ago
The circuit act as a low pass filter because of inductor serially connected.
Rahul said:
8 years ago
Inductor Connected in series just like a low pass filter. Because for high-frequency XL is very large.
Deepika said:
5 years ago
High pass filter.
Simply remind R-C (output) ----LPF.
L-R (OUTPUT) ---LPF and vice versa.
Simply remind R-C (output) ----LPF.
L-R (OUTPUT) ---LPF and vice versa.
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