Jännitesuhde

Jännitesuhde, often translated as voltage ratio or voltage divider ratio, is a fundamental concept in electrical engineering describing the relationship between the voltages in a circuit, particularly in systems involving transformers or voltage dividers. It quantifies how a voltage is distributed or transformed.

In a transformer, the jännitesuhde is the ratio of the secondary voltage to the primary voltage. This ratio is directly proportional to the ratio of the number of turns in the secondary winding to the number of turns in the primary winding. A jännitesuhde greater than one indicates a step-up transformer, increasing the voltage, while a ratio less than one indicates a step-down transformer, decreasing the voltage.

For a voltage divider circuit, which typically consists of two or more resistors in series, the jännitesuhde can refer to the ratio of the output voltage across one of the resistors to the input voltage applied across the entire series. This ratio depends on the resistance values of the components.

Understanding jännitesuhde is crucial for designing and analyzing circuits that involve voltage transformation or division, ensuring that the desired voltage levels are achieved or maintained. It is a key parameter in applications ranging from power distribution to signal processing.