Why is it necessary to maintain a constant generator voltage when performing a frequency?

Posted on November 30, 2009 by admin

- Hi, this an AC circuit about THE SERIES RC Sinusoidal Response. Can you help me answer this question. Thank you very much.

Why is it necessary to maintain a constant generator voltage when performing a frequency respone? what would happen to the frequency response data if the generator voltage were allowed to vary?

You need a constant reference voltage for the measurements to be meaningful. The output voltage of the circuit under test will vary according to its frequency response. Without a constant voltage at the input you can not determine the effect of the circuit vs the effect of the varying input voltage and any readings would be meaningless.

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2 Responses to Why is it necessary to maintain a constant generator voltage when performing a frequency?

  1. Warren914 says:
    November 30, 2009 at 6:06 pm

    You need a constant reference voltage for the measurements to be meaningful. The output voltage of the circuit under test will vary according to its frequency response. Without a constant voltage at the input you can not determine the effect of the circuit vs the effect of the varying input voltage and any readings would be meaningless.
    References :

  2. lee26loo says:
    November 30, 2009 at 6:49 pm

    RC circuit timing depends on voltage appling into it. Timing (frequency)varies as supply votage varies. Therefore,a constant voltage is required to produce a contant frequency.
    References :