MPhys Physics / Course details

Year of entry: 2022

Course unit details:
Year 2 Lab Work (All Yr)

Unit code PHYS20180
Credit rating 20
Unit level Level 2
Teaching period(s) Full year
Offered by Department of Physics & Astronomy
Available as a free choice unit? No


Second Year Laboratory (Core)


Unit title Unit code Requirement type Description
Year 1 Lab Work (All Yr) PHYS10180 Pre-Requisite Compulsory
Year 1 Lab Work (One Semester) PHYS10280 Pre-Requisite Compulsory



Amplifiers and Feedback:

To understand how analogue signals may be amplified, manipulated and generated in a controlled manner, and how they may be interfaced to digital systems for subsequent processing.

Learning outcomes



Amplifiers and Feedback:

On completion successful students will be able to:

1. To learn the behaviour of an ideal amplifier under negative feedback (positive) feedback.

2. To be able to apply this to simple amplifier, summer, integrator, phase shifters and oscillator.

3. To test the limitations of a real amplifier.

4. To describe basic methods of analogue-to-digital conversion (ADC)







Amplifiers and Feedback:

1. Elementary circuit theory – discrete components, Kirchoffs laws and complex analysis

2. Semiconductor amplifiers – real and ideal systems

3. Positive feedback, oscillators and control loops

4. Analogue-to-digital conversion

Assessment methods

Method Weight
Practical skills assessment 100%

Feedback methods


Lab: Students will be able to ask questions and will receive guidance (including an initial introduction) throughout the experiment.
During interviews, advice on how to improve the measurement, analysis and presentation of results will be given orally and also written on the assessment sheets, copies of which will be given to the student.
In written reports, detailed comments on how the report might be improved are written on the reports. More general comments are written on the marked sheets, copies of which are returned to the students along with the marked reports. Students are strongly encouraged to contact the markers, when any written comments can be elaborated upon.


Amplifiers and Feedback: Laboratory groups will be allocated, and supported by, a demonstrator who will show the experiments and interact with small groups of students. Detailed feedback, with respect to the Learning Outcomes, will be provided after the assessment interview.

Study hours

Scheduled activity hours
Assessment practical exam 6
Practical classes & workshops 126
Independent study hours
Independent study 68

Teaching staff

Staff member Role
Paul Walmsley Unit coordinator

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