Electrical Engineering

Aim

Electricity as a power source and information carrier is necessary for our modern society to function. The course treats the basics of these electrical systems, both theoretically and practically. The basic electronic components are treated as well for analogue electronics as for digital. The course gives knowledge to understand and deal with electrical and electronic problems at both home and in industry. Therefore the student should be able to:

• Make calculations on DC- and AC-circuits.
• Understand the function and make easier calculations at electromagnetic connections.
• Use structured methods for analysis and construction of electronic circuits.
• Make measurements on electrical quantities as voltage, current and power.
• Describe and make calculations on DC machines

Content

• Direct current: Voltage, current and power. Ohms law and resistance. Components in series and in parallel. Voltage division and current division. Kirchhoffs laws. D/Y- and Y/D-transformation. Applications.
• Alternating current: Sinusoid alternating current, the three-phase system, phasors. Resistance, reactance and impedance. The complex method. Active, reactive and apparent power.
• Magnetism, ideal transformer.
• Analog electronics: Diods and zener-diodes. Transistors. Operational amplifiers.
• Power supply: The series regulator, the three leg regulator. Step-down and step-up.
• Power electronics: Tyristors. Controlled rectifiers.
• DC motors: Construction and function. Controlling rotational speed. Efficiency.
• Elektrical measurement tecknology: Measurement instruments.