Perusjännittejakaja

Perusjännittejakaja is a Finnish term that translates to "basic voltage divider" in English. It refers to a simple electrical circuit used to reduce a higher voltage to a lower one. The most common configuration involves two resistors connected in series across a voltage source. The output voltage is then taken across one of the resistors.

The principle behind a voltage divider is based on Ohm's law. When resistors are connected in series, the current flowing through them is the same. However, the voltage drop across each resistor is proportional to its resistance. By selecting appropriate resistor values, a desired output voltage can be achieved. The formula for the output voltage (Vout) in a simple voltage divider is Vout = Vin * (R2 / (R1 + R2)), where Vin is the input voltage, R1 is the resistance of the first resistor, and R2 is the resistance of the second resistor.

Voltage dividers are fundamental building blocks in electronics. They are used in various applications, such as setting reference voltages, scaling sensor outputs, and creating adjustable voltage sources. While simple and effective, it's important to note that a basic resistor voltage divider is not a regulated power supply. The output voltage will vary if the load connected to it changes or if the input voltage fluctuates. For applications requiring a stable and consistent output voltage, more complex voltage regulator circuits are necessary.