Jännitepiiriin

Jännitepiiriin, often translated as voltage divider, is a simple passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). It is constructed using two or more series-connected resistors or other impedances. The output voltage is taken across one of the components.

The most basic form of a jännitepiiriin consists of two resistors, R1 and R2, connected in series across a voltage source. The input voltage Vin is applied across the series combination of R1 and R2. The output voltage Vout is taken across R2. According to Ohm's law and the voltage division principle, the output voltage can be calculated as Vout = Vin * (R2 / (R1 + R2)). This formula shows that the output voltage is directly proportional to the input voltage and the ratio of R2 to the total resistance.

Jännitepiirien are widely used in electronics for several purposes. They are commonly employed to reduce a higher voltage to a lower voltage level that is required by a specific component or circuit. This is often seen in power supply circuits or when interfacing components with different voltage requirements. They are also used to create reference voltages for analog-to-digital converters (ADCs) and other control systems. Furthermore, jännitepiirien can act as signal attenuators, reducing the amplitude of an electronic signal. While simple, the design of a jännitepiiriin must consider factors such as the load connected to the output, as this can affect the accuracy of the voltage division.