ELECTRONICS 2 ELE2018

ASSESSED COURSEWORK

(Electronic Circuits Section – Dr N Buchanan)


This coursework will contribute a maximum of 5 marks to the module results.

Your work should be uploaded to CANVAS before 10 pm on Monday 22 November.

You may upload a scanned or photographic image of your work, which must be clearly
readable.

Late submissions will incur a penalty – see University regulations.

Dr N Buchanan


2 of 3 ELE2018



Please refer to your operational Amplifiers, Active filter, lecture series when
completing this assignment

1. Design a first order active low-pass filter with a voltage gain at low frequencies
equal to (the last digit in your student number +12) and a cut-off frequency in Hz
equal to your student number with the first two digits omitted. [2 marks]

2. Design a first order active high-pass filter with a voltage gain at high frequencies
equal to (the last digit in your student number +2) and a cut-off frequency in Hz equal
to: Cut off Frequency (Hz) = (the value of your student number with the first two
digits omitted)/100 [2 marks]

3. Cascade the two filters from above:
(a) Show clearly the completed cascaded circuit diagram with all component values
and the values of cut off frequencies (Hz) [2 marks]
(b) Calculate the voltage gain in dB at the filter passband [1 mark]
(c) Draw a bode plot of the cascaded filter (Frequency (Hz) on the x axis, voltage gain
(dB) on the y axes) [3 marks]

Logarithmic graph paper is provided for the bode plot.

Assumptions:
Referring to the active filter lecture notes you can assume a value of
R1 to be 1 k for the low pass filter and R4 = R = 10 k for the high pass filter.


Total 10 marks - will be scaled by 5/10




















































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