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  • Regarding opamps

    Santhakumar A

    Member

    Updated: Oct 26, 2024
    Views: 1.1K
    Hi all,
    i've been looking for a circuit may be based on OP AMP solution.
    My requirement is that i am feeding varying input voltage (0 to 24V) to an circuit (could be op amp) it's output would be 0 to 3.3V.
    So thing is my output should be correlated with input that means
    1. Say input is 0% (0V) my output shout be 0% (0V).
    2. Say input is 50% (12V) output should be 50% (1.65V)
    3. Say input is 100% (24V) output should be 100% (3.3V)

    Do anyone have idea on how to have circuit for this.
    Thanks,
    -Santhakumar.
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Replies

  • Wagner Lipnharski

    Member • Mar 11, 2016

    Santhakumar, okay, I will grab this fish. Use resistor divider, 3k3 Ohms in parallel with the measured output and a 20k7 (18k + 2k7) Ohms in series with the input. The value of the resistors may change, based on the impedance of the circuit connected to this output.
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  • Santhakumar A

    Member • Mar 13, 2016

    Hi Wagner..
    thanks,
    it works well..
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