Hey yall !
I've got quite the problem with an assignment related to designing a band-pass filter.
In the assignment i have to design a band-pass filter which filters out a specific frequency, 5 k Hz. I have uploaded a jpg of the circuit I'm using. The assignment spec gives the choice of using an inductor/coil with either 100 μH or 220μH. After choosing the coil with the inductance of 100 μH i used the equation, seen in the attachments, to calculate the capacitance.
The circuit works as intended but ....
As i re-read the assignment spec i discovered that the coil also has a "natural resistance" of 0.21 Ω resp. 0.43 Ω (for the coils with 100 μH and 220μH).
When i applied the resistance to the circuit the result was of course not at all as good as before.
So my question is ... What do i need to do in order to compensate for the resistance of the coil to get the "same" result as before introducing it ?
I've got quite the problem with an assignment related to designing a band-pass filter.
In the assignment i have to design a band-pass filter which filters out a specific frequency, 5 k Hz. I have uploaded a jpg of the circuit I'm using. The assignment spec gives the choice of using an inductor/coil with either 100 μH or 220μH. After choosing the coil with the inductance of 100 μH i used the equation, seen in the attachments, to calculate the capacitance.
The circuit works as intended but ....
As i re-read the assignment spec i discovered that the coil also has a "natural resistance" of 0.21 Ω resp. 0.43 Ω (for the coils with 100 μH and 220μH).
When i applied the resistance to the circuit the result was of course not at all as good as before.
So my question is ... What do i need to do in order to compensate for the resistance of the coil to get the "same" result as before introducing it ?
Attachments
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