EI1110 Electrical Circuit Analysis, Extended Course 9.0 credits

Elkretsanalys, utökad kurs

  • Education cycle

    First cycle
  • Main field of study

  • Grading scale

    A, B, C, D, E, FX, F

Course offerings

Autumn 19 CELTE for programme students

  • Periods

    Autumn 19 P1 (4.0 credits)

    Spring 20 P3 (5.0 credits)

  • Application code


  • Start date


  • End date


  • Language of instruction


  • Campus

    KTH Campus

  • Tutoring time


  • Form of study


  • Number of places

    No limitation

  • Course responsible

    Daniel Månsson <manssond@kth.se>

  • Teacher

    Daniel Månsson <manssond@kth.se>

  • Target group

    Compulsory for the Degree Program in Electrical Engineering (CELTE).

  • Part of programme

Autumn 18 CELTE for programme students

Intended learning outcomes

After completion of the course the student shall be able to

·       Use and choose mathematical model in order to calculate basic electric quantities like voltage, currents and power in linear ac/dc-electrical circuits, including basic three phase circuits, and transient effects, as well as for sources of more general character like e.g. triangular waves.

·       Know and state basic quantities e.g., like circuit impedance, describe a diodes function, phase difference between two currents etc. furthermore, be able to identify properties of circuits and to apply methods that reflect linearity, non-linearity, dc or ac-voltage, transient or filter functions. 

·       Analyze and explain a circuit’s properties by separation of different temporal parts, e.g. stationary properties, and transient properties. Furthermore to calculate the entire response from a circuit, from stationary to transient and back to stationary state. The student should show that tools like equivalent circuits and matching are a part of their analyzing toolbox.

·       Construct analogous circuits for simpler tasks like filtering, voltage division etc. with limitations on e.g. the required power consumption. Dimensional analysis and plausibility test on electrical circuit results.

·       On breadboard, or similar, construct a circuit and to electrically measure both to verify own calculations and to find possible sources of errors in the physical circuit.

Course main content

Ohms and Kirchhoff’s laws. Analyzing methods, including node analysis, mesh analysis, superposition, and graphical methods. Transients. Alternating currents (ac) analyzed with a complex simplified Fourier-transform method, and basic three phase system. Complex power. Matching. Filter. Inductive coupling. Operational Amplifiers. Applications. The CDIO elements includes dimensional analysis, and to construct, dimensionalize and create simpler circuits, which falls under the concept, ”Conceiving”, with elements of a beginning to ”Design”.


The course consists of lectures, exercises and laborations. To participate in the course you have to register. The course is based on solving many problems and this requires that the student solves a large amount of exercises. Choice of solution method and making the required calculations requires frequent practice.


Pre-university physics and technology courses, and introduction to mathematics at KTH or similarly.

Basic concept that is assumed that student is familiar with: current, potential, voltage, resistance, power. Ohms law, Kirchhoff’s laws. Linear differential equations with constant coefficients. Complex numbers: polar and Cartesian form, algebraic operations, conjugation.

From experience we know that many students have forgotten a part of circuit theory and have hence developed a repetition booklet, with a number of tasks to refresh the knowledge.

Recommended prerequisites

Gymnasiematematik och -fysik/teknologi samt kursen i matematik för E1 vid KTH eller motsvarande.

Väl inhämtade kunskaper om komplexa tal, algebraisk bråkräkning med komplexa storheter, polär och kartesisk form för polära tal samt Eulers formel används flitigt. Vidare förväntas studenten känna till spänning, ström, effekt, serie och parallellkoppling av resistanser.


Kretsanalys av Bill Karlström. Det slutgiltiga valet av kurslitteratur kommer att uppges på kursens hemsida. 


  • LAB1 - Laboration 1, 1.0, grading scale: P, F
  • LAB2 - Laboration 2, 1.0, grading scale: P, F
  • TEN1 - Examination 2, 3.0, grading scale: A, B, C, D, E, FX, F
  • TEN2 - Examination 2, 4.0, grading scale: A, B, C, D, E, FX, F

The course is given as two parts. A 4hp part in period 1 and a 5hp part in period 3. To each part there are project tasks and a written exam. The project tasks are pass/fail and the exam is has grades A_F. Final grade requires that the projects are finalized and consist of a weighted average of the two written exam explicitly explained in the course pm.

Requirements for final grade

Passing the exam and labs.

Offered by

EECS/Electrical Energy Engineering


Daniel Månsson


Daniel Månsson <manssond@kth.se>


Course syllabus valid from: Spring 2019.
Examination information valid from: Spring 2019.