Please do the following attached problem. Any simulation is fine, as long as the specifications are met, (i.e. a gain of >600 V/V). Please give a detailed account of your design.
Name: ___________________________________________________ ECE3040 Major Project You are to design and supply a supporting engineering report (typed) for a MOSFET amplifier to amplify
an audio signal with a total gain of >+600 V/V over the 10 Hz to 10 KHz range. The MOSFETS to be used
are power mosfets (known as HEXFETS) IRF150 and IRF9140 parts and will handle more current than
what we have typically used in class examples. The data sheets and PSPICE models are widely available
on the internet.
You can add large value capacitors as needed to achieve your gain specifications and can assume C1 is
large. The bias point should be chosen so that the amplifier can pass a 10 mV input signal and meet the
gain specification without clipping the signal (verified with a pspice transient plot below).
Due to the lateness of this bonus problem, minimal partial credit will be given. Thus, do not attempt it if
you cannot turn in all parts below. Name: ___________________________________________________
I certify that I received no help from any person and that all the non-human resources that I used to
complete this bonus assignment are summarized with references in the report section of these
problems. I further certify that I will turn in any student observed giving or receiving help on this
assignment. Signature ________________________________________________________________ Printed Name______________________________________________________________ A (5 points ? Only if part B is also included) On the Schematic Above, label your output node and what
values and locations of added capacitors you used.
B (15 points) Provide values of resistances for which the transistor is biased into the proper mode for
amplification. Support your work with equations and justification for your answer on an attached sheet
and summarize your results in the spaces provided below. Your choice of values will affect the gain of
your circuit so include your gain analysis in your supporting work. All work should be supported with
equations and not merely selected via simulation.
R3___________ R4___________ R5____________ R6_____________
Voltage gain at the 1 KHz ________________________________
IDS1 ___________ IDS2 ___________
VGS1 __________ VDS1 __________ VGS2 __________ VDS2 __________
C (5 points) Simulate your results in PSPICE showing a graph of the output voltage for a 10 mV input
over the frequency range of 1Hz to 100KHz and a transient response at 5 KHz. You must turn in:
i) AC response plotted showing your solution meets the bandwidth design criteria (use cursors
on your plot for this).
ii) The transient response for a 10 mV sinusoidal input voltage showing 10 cycles.
iii) No points will be given for this section unless you email the grader me your PSPICE file and
unless you use the PSPSICE version from Orcad version 16.6 found at:
This question was answered on: Jan 30, 2021
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