Help with the following filters with Opamp?

Could you tell me what type of configuration corresponds to each one (Low pass, high pass, etc)

Thank you

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  • 3 years ago
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    1. low pass follower

    2. high pass follower

    3. band pass. The input cap removes low frequencies. The cap across the feedback removes high frequencies.

    4. probably low pass, but would take some analysis.

    the + input will have a signal that is reduced at high frequencies.

    the opamp will force the output to be a multiple of what is at the + in.

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