sekundærspenningen

Sekundærspenningen refers to the voltage present in the secondary coil of a transformer. Transformers work on the principle of electromagnetic induction, where a changing magnetic field in a primary coil induces a voltage in a secondary coil. The ratio of the number of turns in the primary coil to the number of turns in the secondary coil determines the relationship between the primary voltage and the secondary voltage.

If the secondary coil has more turns than the primary coil, the transformer is a step-up transformer, and the secondary voltage will be higher than the primary voltage. Conversely, if the secondary coil has fewer turns than the primary coil, it is a step-down transformer, and the secondary voltage will be lower. This voltage transformation is crucial in many electrical applications, such as power distribution, where high voltages are stepped down to safe levels for household use.

The magnitude of the secondary voltage is directly proportional to the ratio of the turns in the secondary coil to the primary coil, assuming an ideal transformer with no losses. Factors like the frequency of the alternating current and the core material of the transformer also influence the induced voltage. In practical transformers, some energy is lost due to resistance, eddy currents, and hysteresis, leading to a slightly lower secondary voltage than theoretically predicted.