Extracurricular Course Syllabus

Practical manufacturing of prototypes of electronic circuits

Course type

Extracurricular activity

ECTS

4 ECTS credit point

Study programme

For the recognition of ECTS credit points in study programmes 1 and 2 cycle.

Prerequisits

Passed a selection exam in the field of general knowledge of electrical engineering, prepared bytheinstitution of elective course. Selection exam shall be settled electronically, beforeapplication to activity, according to a predetermined and publicly published scoring. Elective exam is considered as passed if the candidate correctly solve 50% of the exam. Candidates are informed of the outcome immediately after submission. The exam is solved via secure connections on the web servers ofFaculty of Electrical Engineering.

 

Learning and teaching methods  
  • Seminar: 25 hours.
  • Individual work: 50 hours.
  • Lectures: 15 hours.
  • Tutorial: 12 hours.

Lectures, laboratory courses and practical construction of prototype devices in the laboratory. Participants can also carry out part of the practical work independently, outside of the laboratory exercises and then bring the final product to the review and assessment on the last laboratory exercise. After the pedagogical work, participants independently design, construct and test their own product.

Assessment

Checking that the IR remote controller works (40%), Checking that the finished product meets the requirements for the correct operation. (60%)

 

Content (Syllabus outline)  

A rough breakdown of content:

Overview ofelements, marking, properties,

Review of processes for manufacturing printed circuit boards,

A method of manufacturing a printed circuit board with toner transfer,

Review of procedures for soldering printed circuit board elements,

Soldering the PCB with a manual soldering iron,

Electromagnetic interference,

Shielding and housing.

Practical work: Creating the IR remote control (transfer of theory into practice).

Individual work: Creating a working device of their choice in the form of a seminar.  


A detailed breakdown of content:

Theoretical part:

1.Basic components ofa circuit,manufacturingtechnologyoverview, implementingfeatures,marking,trapswhen orderingitems.2.Programs for printed circuit board design,3.Proceduresin designingprintedcircuit boards.4.Drawingthe scheme,designingthe circuit.5.Drawing a printed circuit board, the choice of eyelets for hand/machine soldering and drilling.6.File formats and preparing the mask for various manufacturing processes.7.Photo etching process with positive photo-illumination and development.8.Direct toner transfer, temperature and other parameters.9.Chemical etching of printed circuits: Fe2O3, HCl + H2O2, (NH4) 2S2O8 and Na2S2O8.10.Practical toner transfer to the one-sided printed circuit board.11.Retouching errors in photo etching process or toner transfer methodby hand drawing.12.Practical etching with HCl + H2O2 and Na2S2O8.13.Control of the etched circuit board with a microscope, the effect of under-etching.14.Removing photo compound/toner, trimming and drilling of printed circuit boards.15.Alloy of the solder, tin and lead, eutectic, accessories.16.Various fluxes for soldering: stearic acid, rosin.17.Muriatic acid, soldering paste, water-soluble fluxes.18.A method of soldering, melting and wetting working elements.19.Types of soldering stations, types of points and temperature control.20.Tinning of a printed circuit board.21.Practical tinning of printed circuit board (IR remote control).22.Assembling the device by soldering, suitable SMD soldering techniques.23.Removing excess solder with solder wick and pump.24.Gain and frequency boundaries of modern components, unwanted sections. 25.Shielding the low-frequency electric field, electrostatics.26.Shielding the low-frequency magnetic fields, an example of the cathode ray tube in an oscilloscope.27.Shielding the radiated electromagnetic field, penetration depth.28.High-frequency shielded coils, intermediate frequency transformers.29.Soldered brass housing for internal shielding.30.Usage of ferrite beads to suppress unwanted resonances.31.The usage of ferrite rings to damp phase interference.32.Capacitors bushings for soldering and screwing, types of ceramics.33.Housing resonance of microwave circuits, absorber and surface waves.34.Electromagnetic compatibility with other devices.35.The external aluminum housing, the choice of metal and drawing on a sheet.

Practical part:

1.Practical soldering of IR remote control.2.Testing the IR remote control, setting the frequency of the transmitter.3.Correction of errors in soldering.4.Replacing the damaged or incorrectly installed components.5.Practical aluminum sheet cutting for IR remote control transmitter.6.Transferring the housing drawing of the IR remote control device to the sheet using laminator.7.Practical drilling of different holes and openings in housing of the IR remote control transmitter.8.Cutting the metal for the casing of the remote control.9.Practical aluminum sheet bending for casing the remote control.10.Assembling the housing and installing the IR remote control transmitter.11.Experimental work with a hot air soldering station.

Seminar:

1.Selection of topics.2.Product design.3.Creating a printed circuit board.4.Assembling (SMD) circuit board.5.Installation in housing.6.Presentation for the other participants

Objectives and competences

Objectives:

The ability to create prototype electronic circuits with SMD components on the PCB, learning to use appropriate tools for the work (soldering iron, laminator, flux). Learning the proper handling of (own) tools for the job. Testing of the finished product, detecting and correcting errors.

Competences (occupation specific):

Knowing different ways of manufacturing prototype printed circuit boards

Knowledge of effective ways for hand soldering SMD components

Rapid prototype production of electronic circuits such as planning step

Intended learning outcomes  

Knowledge and understanding:

Manufacturing of prototype printed circuit boards

Reliable hand soldering

Assembling SMD circuits

Troubleshooting errors on printed circuit boards

Installation in housingand shielding

Literature

The literatureis available only in Slovenian language.

Notes

The courses are financed by the University of Ljubljana and free of charge for students of the University of Ljubljana.