Resistive voltage divider.

A resistive voltage divider allows you to lower the input voltage, and it does not matter - DC or AC voltage.

Online calculator for resistive voltage divider below, allows you to find:
- Output voltage (Uout) through resistance (R1), resistance (R2) and input voltage (Uin);
- Resistance R1 through output voltage (Uout), input voltage (Uin) and resistance (R2);
- Resistance R2 through output voltage (Uout), input voltage (Uin) and resistance (R1);
- Input voltage (Uin) through resistance (R1), resistance (R2) and output voltage (Uout).

A resistive voltage divider is an electrical circuit used to produce a signal at the output of the circuit that is less than the signal at the input of the circuit. A resistive voltage divider consists of two resistors connected in series between the plus and minus of a voltage source.

When connecting a resistive voltage divider to a voltage source, the voltage across the point between the two resistors can be calculated using the formula Uout = Vin * R2 / (R1 + R2), where Uout is the voltage across the point between the resistors, Vin is the input voltage, R1 and R2 are resistor values.

With the help of a resistive voltage divider, you can get a signal at a certain part of the circuit, for example, at the input of an analog-to-digital converter (ADC) for measuring voltage. A resistive voltage divider can also be used to set a specific voltage level at the input of an amplifier, or to tune a signal to a specific frequency in filters.

One of the advantages of a resistive voltage divider is its simplicity and availability of components. Resistors are cheap and readily available elements that can be used to create resistive voltage dividers of varying accuracy and input impedance.

However, there may be some problems when using a resistive voltage divider. First, when using large resistor values, there can be a problem with parasitic capacitances and inductances, which can lead to signal distortion. Second, the accuracy of a resistive voltage divider can be degraded by temperature changes and resistor drift.

To reduce the effect of parasitic capacitances and inductances, compensating elements such as additional resistors or capacitors can be used. You can also use special resistors with low temperature drift to improve the accuracy of the resistive voltage divider.

In conclusion, a resistive voltage divider is a simple and affordable electrical circuit used to produce a signal on a particular part of a circuit, usually to measure voltage. The resistive voltage divider can be improved with compensating elements and special low temperature drift resistors. Understanding the resistive voltage divider and its applications is essential to the design of efficient and reliable electronic devices.
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