Need explanation for the working of filters in the analog circuit

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patan.gova

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Hello,
Can someone explain what are the different filters used in the below analog circuit and how the circuit work with them.

Thanks.
 

I suppose, kW menas kOhms?
Which kind of supply? Dual or single? The voltage divide R0 indcates single supply.
However, what is the purpose of the switch?
Switch open: The circuit resembles an (inverting) bandpass characteristic with a relatively small Q.
 

Yes,kW menas kOhms.
Can you explain me how the circuit works.
The original circuit is this


 
Last edited:

1.) Switch open: Bandpass, center frequency 1 Hz, max. gain 35 dB.
2.) Switch closed: High pass, corner frequency 30 Hz, max. gain 0 dB.
Correction: corner at 2 Hz.
 
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