Calculate the actual frequency of circuit, Electrical Engineering

(a) The circuit of Figure 1 represents an amplifier-speaker connection. The filter is a low pass filter which is connected to the woofer. The filter is a -network.

(i) Design a constant-k π low pass filter with a cut-off frequency of 15 kHz and terminated with a resistive load of 600[1].

(ii) Draw the circuit diagram indicating the component values and hence sketch the circuit response, showing it mimics a Butterworth filter response.


(b) Using the table of Normalised values (and indicate the values selected), design a passive 3rd order Chebyshev Low Pass filter, with a cut-off frequency of 15 kHz and a design impedance of 600[1]. The ripple in the pass band is not to exceed 3 dB. Draw the circuit diagram, and show the component values. Sketch the frequency response expected.

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(c) By simulating the circuits or otherwise, compare the actual frequency response of the filters of (a) and (b).

Posted Date: 2/25/2013 5:05:44 AM | Location : United States

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